How does the inverter react for the different possible values of parameter P1210 Auto restart?

P1210 is the parameter which enables a restart after a mains break or after a fault.

The possible values for P1210 are described in the parameter list, but a more detailed explanation is as follows:

P1210 = 0:  Automatic restart is disabled - i.e. it is switched off so the inverter will not restart without toggling the ON command.

P1210 = 2:  The inverter will restart after a mains blackout when the power is re-applied.  The ON command does not need to be toggled.  The inverter will not restart after a brownout (a very short mains break where the DC link has not fully collapsed).  It will show an F0003 which needs to be reset before the inverter can be made to run by toggling the ON command.

P1210 = 3:  The inverter will restart after either a fault or a mains interruption of any duration.

P1210 = 4:  The inverter will restart after a mains interruption of any duration.  Any other fault will need to be reset and the run signal should be toggled.

P1210 = 5:  The inverter will restart after a mains break (a long one) or a fault.  It will not start after a brownout.  It will show an F0003 which needs to be reset before the inverter can be made to run by toggling the ON command.

A brief explanation of the difference between a "blackout" and a "brownout" for the purpose of the above description is as follows:
 - A "brownout" is where the power is interrupted and re-applied before the display on the BOP (if one is fitted to the inverter) has gone dark.
 - A "blackout" is where the display has gone dark before the power is re-applied.

How many times can I switch the SED2 FSA - FSF on and off, and how frequently?

These units have been tested under worst case conditions with 100,000 power-cycles.  Units with Frame Sizes A-E can be power cycled every 30 seconds, and Frame Size F units every 150 seconds.

Can I scale the value displayed in r0000?

Yes, it is possible to scale and perform mathematical functions on the display value.  This is done by using the feedback part of the PI controller as follows:

P0003 = 3 (allows access to level 3 parameters)
P2200 = 0 (PI control is not enabled)
P2264 = xx (the quantity to be scaled and displayed is connected to the PI feedback loop - e.g. 24 = Output frequency)
P2269 = gain applied to the signal in % (100 % = a scaling factor of 1)
P2270 allows mathematical functions (see parameter list)
r2272 = displays scaled value

P0005 = 2272

The scaled value is now displayed in r0000, but the displayed value is a % quantity with the normalization determined by parameters P2000 to P2002.

Note:  To display scaled negative values using this method, P2268 (PI feedback minimum value) should be set to -200%.  The default value for this parameter is 0%.

How should the analogue setting DIP switches on the SED2 I/O board be set?

The settings should be as follows:

For voltage input, switches 1 & 2 should be OFF (down) - default setting.

For current input, switches 1 & 2 should be ON (up).

How do I correct motor rotation?

Motor rotation on an AC drive - confusion sometimes exist on how to get proper motor rotation on an AC drive.  In the following we hope to clear up confusion on how to achieve proper motor rotation on drives with and without bypass.

Utech Systems wires all drive systems to maintain consistent wiring from input to output.  Changes in internal wiring is not required to provide correct motor rotation.

The display on my BOP shows "-----" but the inverter can still be run from the digital inputs. What could cause this?

It is possible that the BOP connection pins on the SED2 inverter are bent out of position.  To remedy this, you should disconnect the mains supply and bend the connection pins back into their correct positions.

What is the resolution and accuracy of the analogue output on the SED2?

The resolution is 10 bit, or 0.098% of the maximum value.

This is calculated as follows:
10 bit would give a range of 0 to 1023 (decimal) i.e. 1023="100%"
The minimum resolution of 1 bit change = 100/1023 = 0.098%
If 100% were 50 Hz, this would equate to a resolution of 0.049 Hz

The analogue output accuracy is tested and calibrated to 2% of full scale.

SED2: Suppressing a warning message

You can suppress a warning using the level 3 parameters P2100 and P2101

Some warning messages may occur naturally during the normal operation of an application and you may wish to suppress them.

Parameter P2100 (Fault / Warnings for special reactions) is an indexed parameter, which allows up to 3 faults or warnings to be selected for non-default reactions.  By entering a fault or warning code in index 0-2 of P2100 and using P2101 (Special Reactions for Faults and Warnings) to allocate the desired reaction to the corresponding index, you can cause faults and warnings to produce non-default reactions as follows.

P2101 setting 0 = No reaction, no display
Setting 1 = OFF1 stop reaction
Setting 2 = OFF2 stop reaction
Setting 3 = OFF3 stop reaction
Setting 4 = default reaction

Setting 0-3 only are available for fault codes
Settings 0 and 4 only, are available for warnings

Example:  Warning A911 indicates the drive is extending the deceleration ramp time to prevent over voltage.  If you want to suppress this message, set the following parameters:
P2100 Index 0 = 911 (Action to be taken on warning 911)
P21001 Index 0 = 0 (No action, no warning)

Note:  All fault codes have a default reaction to OFF2.  The available reactions for any fault code can be seen by setting the fault number in P2100.xxx and looking at the corresponding index of P2101.  Faults which are critical for hardware protection cannot be changed from OFF2 reaction.

The principal ones are:
F0001 - Over current
F0002 - Over voltage
F0003 - Under voltage
F0004 - Inverter Over temperature
F0005 - Inverter I2t
F0040 - Auto Calibration failure
F0041 - Motor data identification failure
F0051 - Parameter EEPROM fault
F0052 - Powerstack EEPROM fault
F0060 - Motor control ASIC comms failed
F0101 - Stack overflow

How does BiCo Work?

Introduction....

The SED2 inverter uses several access levels of parameterization, set by parameter P0003.

User access level 1 gives access to the most frequently used parameters.  For example, P0701 sets the function of digital input 1, with possible values such as:

1 = ON right
12 = Reverse
15 = Fixed frequency etc.

P731 sets output relay functions such as: 
52.3 Fault active
53.3 Current limit etc.

User access level 4 is for service only.  User access level 3 gives full access to all other parameters.

To make use of BiCo you will need access to the full parameter list.  This is detailed in the reference manual.  At this level many new parameter settings are possible, including BiCo functionality.  BiCo functionality is a different, more flexible way of setting and combining input and output functions.  It can be used in most cases in conjunction with the simple, level 2 setting described above.

How does BiCo work? - The BiCo system used on more complex drives such as MASTERDRIVERS allows complex functions to be programmed so that, for example, Boolean and mathematical relationships can be set up between inputs (digital, analogue, serial etc.) and outputs (inverter current, frequency analogue output, relays etc.)

The SED2 uses a simplified version of BiCo, which is still very flexible, and can be set up without using additional software or hardware.

Example 1 - Use BiCo parameterization to enable the output relay using digital input 2.

Step 1:  Set P0003 to 3 to access all parameters.
Step 2:  Enable BiCo parameterization on digital input 2 by setting P0702 too 99.  (Note:  If P0701, P0702, P0703 or P0704 are set to 99 it is not possible to change them to another value; the drive must be reset to factory defaults.)
Step 3:  Set P0731, because digital input 2 is 'open' to BiCo settings, a new value 722.1 now appears in P0731.  The value 722.1 means "connect to digital input 2" (722.0 = input 1, 722.2 = input 3 etc.)  Set P0731 to 722.1
Step 4:  Run the inverter using input 1 and operate the relay using input 2.

Note that BiCo is a 'reverse' connection.  That is, the output function is connected back to the input; it is not possible to tell from P0702 (99) what the digital input is controlling.  However, there are many diagnostic parameters that can assist in setting up BiCo functions.

Example 2 - Set P0771 to 37; this connects the analogue output to the inverter temperature parameter, r0037, so the temperature of the inverter can be monitored remotely.

Example 3 - Using OFF3 instead of OFF1.  Set P0701 = 99 to enable BiCo function.  Set P0840 = 722.0 (ON right via digital input 1) and P0848 = 722.0 (OFF3 via digital input 1).  Now the drive will ramp between set points using the normal ramp time as set in P1120 and P1121.  However, at switch off from digital input 1, the drive will turn off with an OFF3, using the ramp rate set in P1135, which may be different to P1121.  An additional advantage is that the OFF3 function usually requires a second digital input; here the BiCo function permits digital input 1 to perform a run right and an OFF3.

Example 4 - Selecting an alternative ramp time when a certain fixed frequency is selected.  Three fixed frequencies are selected using three digital inputs.  The digital inputs also select 'ON right'.  The third digital input also selects the alternative (JOG) ramp times.

Note that this will only enable an alternative ramp uup time, as when digital input 3 is switched low it will also de-select the alternative ramp time, and normal ramp down time will therefore be used.

Step 1:  Use fixed frequencies
P1000 = 3

Step 2:  Enable BiCo functionality
P0701, P0702, P0703 = 99

Step 3:  Define source of fixed frequencies.
P1020 = 722.0, P1021 = 722.1, P1022 = 722.2
This defines the source of each fixed frequency as digital input 1, 2 and 3.

Step 4:  Define mode of operation
P1016, P1017, P1018 = 2
This sets the code of operation of fixed frequencies to "select fixed frequency and ON right command"

Step 5:  Select JOG ramp times instead of normal ramp times.
P1124 = 722.2.  This enables digital input 3 with this function.

Note that steps 3 and 4 use BiCo functions to set digital input 1 and 2 functions that could also be set using normal parameterization.  This is advisable to avoid confusion.

Using Control and Status words with BiCo.

Many SED2 read only parameters consist of control words.  The parameter is made of a 16-bit number; each bit representing a particular value.  For example parameter r0052 (status word 1) gives various value settings such as "Inverter ready" (bit 0) or "Motor Current Limit" (bit b).

This parameter is displayed using the vertical segments of the BOP display to show status; that is, the status of each bit can be read from the BOP display.  These bits can also be accessed by BiCo using the parameter number and bit state.  So for the relay to operate at current limit, parameter P0731 is set to 52.b.  This is actually a level 2 setting, but many more settings can be selected in level 3 using these BiCo functions.

Each bit of the control and status words (r0052 to r0056) can be connected to several output functions.

For Example: 
Setting P0731 to 56.5 will indicate that starting boost is active.  This is, if P1312 (starting boost) is set to enable some starting boost, the relay will be active during the ramping phase as starting boost is applied.

Similarly, if P0731 is set to 56.6 and P1311 (acceleration boost) enabled, then the relay will be energized any time that the set point is increased.

Setting P0731 to 56.12 would enable the relay with the voltage controller is active.  As this occurs during regeneration it could be used to indicate excessive load, or too fast a ramp down.

What are the binary input command functions RUN right and RUN left for the SED2?

The basic functions are the same, but there is a difference.  On SED2 setting P0700 = 2, P0701 = 1 and P0702 = 2 allows the user to give the inverter RUN right and RUN left commands.  With this setting, however, the user must first allow an already running inverter to stop before applying the RUN command for running in the opposite direction.

If for example the inverter was running right and receives a RUN left command before the inverter is stopped, the RUN left command will be ignored.  For applications where a change of direction while running is required we would recommend using the REVERSE command.  This allows a change of direction without removal of the RUN command and the factory default setting DIN1 - RUN right (P0701 = 1) and DIN2 = REVERSE (P0702 = 12).  What must be noted is that the REVERSE command on its own will not cause the inverter to start, so that it should be used in conjunction with DIN1 (RUN).  This can cause difficulty if the machine PLC software is already such that a separate signal for running in each direction.

Alternatively, use the digital inputs DIN1 and DIN2 with the standard settings (RUN and REVERSE), and connect a diode from DIN2 (anode) to DIN1 (cathode).  Now when a "RUN left" signal is applied to DIN2, this appears as a RUN signal on DIN1 and REVERSE signal on DIN2, so the drive runs left.  When a "RUN right" signal is applied to DIN1, the drive runs right as expected.

Similar functionality can be achieved using the following parameter settings, which involve the use of internal (BiCo) connections.  This will allow the RUN right and RUN left commands to be used for starting and direction changes without stopping.  For the example for analogue set point is used, but other set point sources are possible.

P0003 = (allows access to level 3 parameters)
P0700 = 2 (command source terminals / BiCo)
P0701 = 99 (BiCo)
P0702 = 99 (BiCo)
P0703 = 99 (BiCo)
P1000 = 23 (see note 1)
P1001 = 0.0 Hz
P1002 = 0.0 Hz
P1016 = 2 (FF1 + RUN command)
P1017 = 2 (FF2 + RUN command)
P1020 = 722.0 (DIN1) (source FF1)
P1021 = 722.1 (DIN2) (source FF2)
P1113 = 722.1 (DIN2) (source REVERSE)

Can the analogue output on SED2 be used as a binary output?

Yes, with certain restrictions, using BiCo.

The analogue output cannot be directly connected to one of the binary status bits.  It is only possible to connect it directly to analogue display values.  It is however possible to use BiCo to detect the change of a state of a bit as follows:

Example:  To view bit 52.3
P1000 = 3 (fixed frequencies cannot be used as a setpoint source)
P1001 = 50.0 Hz. (fixed frequency 1)
P1016 = (selection of fixed frequency is binary coded)
P1020 = 52.3 (enable fixed frequency 1 with but 52.3)

P0771 = 1024 (display fixed frequency total at analogue output)

This works as follows:

When 52.3 is binary hi (1), the value in P1001 is transferred to r1024 using the normal fixed frequency mechanism.  The frequency however is not actively used as a set point (p1000).  By connecting the value of r1024 to the analogue output using P0771, we get 20mA when bit 52.3 is 1 and 0mA when bit 52.3 is 0.  This method can be used for any bit from a BiCo connectable bit parameter.

How can I prevent unauthorized operators changing parameters (without removing the BOP)?

There are two methods of locking the parameters:

Method 1:  Using Parameter P0927.

Parameter P0927 defines how the user is able to change parameters.  It governs whether parameters can be changed over each of the serial links or not.

Setting a value of 0 prevents all parameters (except P0003, P0004, and P0927) from being altered from all sources.

Other setting are available - see description for P0927 in the Operating Instructions.

Note:  P0927 is a binary parameter.

Method 2:  Using Parameters P0011, P0012 and P0013

The purpose of P0013 is to define a user parameter set, which is easy to see.  This prevents users accessing other parameters.  Therefore by selecting no parameters in this set and applying the lock, access to all parameters is prevented.

The setting of the lock, key and user set is described in the Parameter List in P0013, but to prevent access to all parameters set the following:

P0003 = 3
P0011 = [ your pin number ] - this defines the lock or password for P0012
P0003 = 0 = this enables the user parameter set and locks the lock.

Now the only parameters that can be accessed are P0003 (read only), P0012 and P0010.

To unlock the parameters, set P0012 to the same value as P0011 [ your pin number ] and this will allow P0003 to be changed and therefore permit access again to parameters.

A parameter reset (P0010 = 30; P0970 = 1) will unlock the setting and reset all parameters.

Can I use the motor holding brake function and the reverse command at the same time?

This is not recommended.  As the drive reverses, the frequency ramps through zero without operating the holding brake.  This may cause problems in an installation where loss of torque at low speed could result in loss of control.

A better solution is to use RUN right and RUN left commands to control the direction of the motor rotation.  Using this control method, the holding brake will always be enabled at the minimum frequency when and OFF or RUN command is given.  This ensures the motor is fully fluxed and able to deliver full torque when the brake is release.

Brake Operation Using RUN left, RUN right

Note that the RUN left signal must be applied after the drive has come to a stop; that is, a RUN left signal is not recognized while the drive is still running right.

What difference does it make which way round the digits are entered in P1000, the frequency set point selection (i.e. the difference between setting 23 or 32)?

P1000 is the parameter used to select both the main set point plus any additional set point.

If a value of two digits is entered into P1000, this means the "units" digit refers to the main set point and the "tens" digit refers to the additional set point.  It is, however, possible to disable the additional set point using a digital input.  In the case of P1000 = 32, the additional set point would be the fixed frequency, so disabling it would leave just the analogue set point.  If P1000 = 23, the analogue setpoint would be the additional set point, so if "disable additional setpoint" were active (for example P0703 = 33), this would leave the fixed frequency as the remaining set point.  Care must be taken that P1000 is entered correctly.

How can I switch between different ramp times?

The two available ramp times are "ramp times" and "JOG ramp times" - to switch between the two, use P1124.

P1124 (Source: Enable JOB ramp times) defines the source for switching between jog ramp times and normal ramp times.  The most common settings are 722.0, 722.1 and 722.2 (digital inputs 1-3 respectively) and you need to refer to this when setting the function of the required digital input by setting "enable BiCo parameterization" (e.g. P0702 = 99).

An example of a suitable parameter set (with P0003 = 3) is:  P0700 = 2 (control via terminals)
P1120 = normal ramp-up time
P1121 = normal ramp-down time
P1060 = JOG ramp-up time
P1061 = JOG ramp-down time
P0701 = 1 (set DIN to "ON right")
P0702 = 99 (enable BiCo parameterization for DIN2)
P1124 = 722.1 (defines the source for switching between JOG ramp times and normal ramp times as DIN2)

In the example above:
when DIN2 is inactive, the ramp times will be "normal" (set by parameters P1120 and P1121).
When DIN2 is active, the JOG ramp times will apply (set by parameters P1060 and P1061).

Note Parameter P0010 must be set to 0 for the inverter to run.

Can I automatically acknowledge faults without restarting the inverter or cycling the power?

Yes, this can be done independently of the P1210 setting.

To do this you should use the second source of fault acknowledge, P2104.  To acknowledge the fault a rising edge must be generated.  There are a number of possibilities of how to achieve this, depending on the type of fault is being acknowledged:

Example 1 - Most faults occur while the inverter is running, and the fault will cause the inverter to stop.  To acknowledge such a fault we require a bit that goes high when the motor has stopped e.g. 56.1 "motor demagnetization finished".  We thus need to set P2104 = 56.1

Example 2 - Acknowledging a specific fault which occurs whether or not the inverter is running, such as over voltage.  In this case we require a bit which goes high when the over voltage condition has ceased.  This is achieved by setting P2104 = 2197.9 (Vcd < P2172) and setting the appropriate voltage level in P2172.  Obviously in the case of over voltages being caused by power surges on the mains, measures should be taken to improve the supply and thus protect the inverter.

Is it necessary to use all three inputs to use the binary coded fixed frequencies function?

No, you can use this with as few inputs and frequencies as you require.

The binary inputs (p0701 etc.) and set point selection (P1000) should be set as normal.  However you must set another parameter to enable the ON command simultaneously because the binary coding is dependent on 3 (4) bits.

Example - To use DIN1 and DIN2 to achieve binary coded selection of FF1, FF2, and FF3 as well as giving the ON command from DIN1 or DIN2, the parameters must be set as follows:

P0003 = (access level 3)
P0700 = 2 (control via terminals)
P0701 = 17 (DIN1: binary coded FF+ON)
P0702 = 17 (DIN2: binary coded FF+ON)
P1000 = 3 (set point selection: fixed frequencies)
P1018 = 3 (fixed frequency selection mode, bit 2: this must be manually set to 3 to enable the full binary coded functionality with ON.  It is not necessary to set the mode for bits 0 and 1 as setting P0701 and P0702 = 17 automatically sets P1016 and P1017 =3).

How do I set the PID Loop to receive a reset schedule set point?

To setup Active PID control, you must configure the following parameters.  P0756 defines the analog input type for the actual value.  Index 0 is analog input 1 and index 1 is analog input 2.  Use a value of 0 for 0-10 V, a 2 for 0-20mA and a 5 for the Ni 1000 sensor.

P0757 sets the minimum scaling of the sensor type.  Use a 0 for 0-10 V, a 4 for 4-20 mA, or a 20 for the Ni 1000 sensor.

P0758 sets the minimum scaling for the sensor range, if you are using a Setra with a range of -2.5 to 2.5 then the value entered in this parameter will be -2.5.

P0759 sets the max scaling range of the sensor type.  Use a 10 for 0-10 V, a 20 for 4-20 mA, or a 120 for the Ni 1000 sensor.

P0760 sets the max scaling for the sensor range, again if you are using a Setra with a range of -2.5 to 2.5 then the value entered in this parameter will be 2.5

When wiring a 0-10v or 4-20 mA Analog Input devices, like a Static Pressure Sensor.  The following diagram should be used.  Make sure that the appropriate setting (voltage or current) for AI1 and or AI2 has been selected and that if you have specific questions regarding this subject, please call Field Support.

I want to use the AOP to control more than one SED2, how do I do this?

AOP Master AN004