Error Detection Level; Auto Configuration Enable / Ssi Binary Format Select - Emerson unidrive sp User Manual

Menus 15 to 17 Parameter Keypad and
SM-Uni Enc Pl structure
x.17

Error detection level

RW Uni
0 to 15
Update rate: Background read
Trips can be enabled/disabled using Pr x.17 as follows:
Bit
0 Wire break detect
1 Phase error detect
2 SSI power supply monitor
3 Suppress trips 1 to 6 if not used as feedback
The binary sum defines the level of error detection as below:
Bit 3 Bit 2 Bit 1 Bit 0
0 0 0 0 Error detection disabled
0 0 0 1 Wire break detect
0 0 1 0 Phase error detect
0 0 1 1 Wire break + phase error detect
0 1 0 0 SSI power supply bit monitor
0 1 0 1 Wire break + SSI power supply bit monitor
0 1 1 0 Phase error detect + SSI power supply bit monitor
0 1 1 1 Wire break detect + phase error detect + SSI power supply bit monitor
1 0 0 0 Error detection disabled + trips suppressed
1 0 0 1 Wire break detect suppressed
1 0 1 0 Phase error detect suppressed
1 0 1 1 Wire break suppressed + phase error detect suppressed
1 1 0 0 SSI power supply bit suppressed
1 1 0 1 Wire break suppressed + SSI power supply bit suppressed
1 1 1 0 Phase error detect suppressed + SSI power supply bit suppressed
1 1 1 1 Wire break detect suppressed + phase error detect suppressed + SSI power supply bit suppressed
NOTE
If the SSI power supply bit monitor feature is enabled, ensure that this has been configured for an encoder setup Pr x.09, Pr x.11.
NOTE
In order for the phase error detection to function correctly the LPR of the SC.HiPEr, SC.EndAt and SC.SSI encoder must be greater than 9 x number
of motor poles (e.g 54 for a 6 pole servo motor).
Trip suppression mode
If bit 3 is set and #3.26 does not select this option module as the feedback device, trips 1 to 6 (encoder trips during normal running) will not trip the
drive. They will still be serviced locally, for example the power supply will be turned off if an overload condition occurs.
When this mode is active and a trip occurs, the option module will set x.49 (freeze encoder position) to alert the user that a trip has been suppressed.
The trip number will still be written to x.50, but a drive trip request will not be made (Slx.Er). The action of resetting the drive resets the flag (x.49) and
the trip (x.50).
x.18

Auto configuration enable / SSI binary format select

RW Bit
OFF (0) or On (1)
Update rate: Background read
SC.HiPEr, SC.EndAt, EndAt
When an SC.HiPEr, SC.EndAt or EndAt encoder is being used, the Solutions Module will interrogate the encoder on power-up. If Pr x.18 is set to one
and the encoder type is recognized based on the information provided by the encoder, the Solutions Module will set-up.
1. The encoder turns / linear encoder comms to sine wave ratio (Pr x.09)
2. The equivalent lines per revolution (Pr x.10)
3. The encoder comms resolution / linear encoder comms bits (Pr x.11)
For SC.HiPEr or SC.EndAt encoders the rotary encoder select (Pr x.16) is also set up. If the encoder is not recognized, there is a comms error or the
resulting parameter values are out of range the Solutions Module initiates a trip 7 or 12 to 16 trip to prompt the user to enter the information. The
Solutions Module can auto-configure with any of the following devices.
Rotary EndAt encoders
The encoder turns, comms resolution and equivalent lines per rev are set up directly using the data read from the encoder.
264
Parameter Parameter
display x.00 description format
US
0
Function
US
OFF (0)
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Advanced parameter
Macros
descriptions
Error detection level
Serial comms Electronic
Performance RFC mode
protocol nameplate
Pr x.17
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Unidrive SP Advanced User Guide
Issue Number: 10