Emerson Unidrive M702 - Page 113

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Unidrive M702 User Guide 113
Issue Number: 3
* This feedback device provides very low resolution feedback and should not be used for applications requiring a high level of performance.
Due to the low resolution of UVW communication only encoders, it is recommended that the P1 Feedback Filter (03.042) is set to its maximum value.
A value of 1 ms to 2 ms may also be required in the Current Demand Filter (04.012) and it is also recommended that the speed loop gains are set to
a low value to obtain stable operation.
Absolute Sincos encoder with Hiperface or EnDat serial communication, or
Absolute EnDat communication only encoder or BiSS encoder
Device Type (03.038)
SC Hiperface (7) for a Sincos encoder with Hiperface serial communications
EnDat (8) for an EnDat communications only encoder
SC EnDat (9) for a Sincos encoder with EnDat serial communications
BiSS (13) for a BiSS communication only encoder
Supply Voltage (03.036) 5 V (0), 8 V (1) or 15 V (2)
Auto-configuration Select (03.041)
Auto-configuration is enabled at default and automatically sets up the following parameters.
Rotary Turns Bits (03.033)
Rotary Lines Per Revolutions (03.034)
Comms Bits (03.035)
These parameters can be entered manually when Pr 03.041 is set to Disabled (0).
Comms Baud Rate (03.037) 100 k, 200 k, 300 k, 400 k, 500 k, 1 M, 1.5 M, 2 M, 4 M
Error Detection Level (03.040)
So for example, to enable the wire break and phase error detection, set Pr 03.040 to 0011.
Absolute SSI communications only encoder, or Absolute Sincos encoder with SSI communications
Device Type (03.038)
SSI (10) for a SSI communications only encoder
SC SSI (11) for a Sincos encoder with SSI serial communications
Supply Voltage (03.036) 5 V (0), 8 V (1) or 15 V (2)
Rotary Line Per Revolution (03.034) Set the number of sine waves per revolution of the encoder
SSI Binary Mode (03.048) Off = Gray Code
On = Binary Mode
Rotary Turns Bits (03.033) Set to the number of turns bits for the encoder (this is normally 12 bits for a SSI encoder)
Comms Bits (03.035) Total number of bits of position information (this is usually 25 bits for a SSI encoder)
Comms Baud Rate (03.037) 100 k, 200 k, 300 k, 400 k, 500 k, 1 M, 1.5 M, 2 M, 4 M
Error Detection Level (03.040)
So for example, to enable the wire break and phase error detection, set Pr 03.040 to 0011.
UVW commutation signal only encoders*
Device Type (03.038) Commutation Only (16) for a quadrature encoder with commutation signals*
Supply Voltage (03.036) 5 V (0), 8 V (1) or 15 V (2)
Error Detection Level (03.040) Set to zero to disable wire break detection
Bit
Description
3 2 1 0
xxx1
Enable wire break detection
xx1x
Enable phase error detection
1xxx
Disable trips Encoder 1 to Encoder 7
Bit
Description
3 2 1 0
xxx1
Enable wire break detection
xx1x
Enable phase error detection
x1xx
Enable SSI power supply alarm bit monitor
1xxx
Disable trips Encoder 1 to Encoder 7