CG Drives & Automation 01-7491-01r0 Functional description 103
Encoder Pulse counter [22F]
Only visible if the Encoder option is installed. Added menu/
parameter for accumulated QEP (Quadrature Encoder
Pulse) encoder pulses. Can be preset to any value within bus
format used (Int = 2 byte, Long = 4 byte).
Encoder fault and speed monitoring
[22G]
Parameters for encoder fault monitoring and speed
supervision by use of the encoder feedback for detecting
speed deviation compared to internal speed reference signal.
Similar speed deviation functionality is also available in the
Crane option, with parameters for speed bandwidth and
delay time.
Encoder fault trip conditions:
1. No encoder board detected after power up and AC
drive is setup to use encoder.
2. Lost communication to encoder board for more
than 2 seconds.
3. If no pulses detected for set delay time [22G1] and
drive in Torque Limit (TL) or Current Limit (CL).
Encoder speed deviation trip condition:
Encoder speed outside set speed deviation band [22G2] for
set delay time [
22G1].
Encoder fault delay time [22G1]
Define the encoder fault and speed deviation delay time.
Encoder fault speed deviation band
[22G2]
Defines the max allowed speed deviation band = difference
between measured encoder speed and speed ramp output.
Encoder max fault counter [22G3]
This is a measured signal showing the maximum time that
the speed deviation has exceeded the allowed speed deviation
band level, set in [22G2]. The parameter is intended to be
used during commissioning for setting up [
22G1] and
[22G2] to avoid nuisance trips and can be cleared by setting
it to 0.
Phase order [22H]
Phase sequence for motor output. In this menu you can
correct rotation direction on the motor by selecting “reverse”
instead of switching the motor cables..
Motor type [22I]
In this menu select type of motor. Emotron AC drives can
control Asynchronous motors, Permanent Magnet
Synchronous Motor and Synchronous Reluctance Motors.
22F Enc Puls Ctr
Default: 0
Resolution 1
Note: For a 1024 pulse encoder [22F] will count
1024 * 4= 4096 pulses per turn.
Note: Encoder speed deviation trip re-uses
“Deviation 2” trip message with ID = 2.
22G1 Enc F Delay
Default: Off
Range Off, 0.01 - 10.00 s where Off = 0
22G2 Enc F Band
Default: 10%
Range 0 - 400%
22G3 Max EncFCtr
Default: 0.000s
Range 0.00 - 10.00 s
NOTE: The value is volatile and lost at power down. It
is possible to reset the value by clearing the
parameter.
22H Phase order
Default: Normal
Normal 0 Normal phase order (U, V, W)
Reverse 1 Reverse phase order (U, W, V)
22I Motor Type
Default: Async
Async 0 Asynchronous motor
PMSM 1 Permanent magnet synchronous motor
Sync Rel 2 Synchronous Reluctance motor
NOTE: If PMSM is selected in menu [22I] it is
recommended to enter [22J] Extend data.
The following will be set automatically if PMSM is
selected in menu [22I]:
• Menu “Spin start [33A] “will be hidden. Means
that spinstart is not possible.
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