Drive Encoder Termination Select; Drive Encoder Error Detection Level - Emerson Mentor MP Advanced User's Manual

Parameter
Menu 3
structure
3.39

Drive encoder termination select

{Fb08, 0.78}
Bit SP
Coding
Range 0 to 2
Default 1
Update rate Background read
The terminations may be enabled/disabled by this parameter as follows:
Encoder input Pr 3.39=0
A-A\ Disabled
B-B\ Disabled
Z-Z\ Disabled

Drive encoder error detection level

3.40
Bit SP
Coding
Range 0 to 2
Default 0
Update rate Background read
Trips can be enabled/disabled using Pr 3.40 as follows:
Bit
0 Wire break detect disabled
1 Wire break detect on A and B (need termination enabled for 5 V and 8 V)
2 Wire break detect on A, B and Z (need termination enabled for 5 V signals)
Encoder trips
The following table shows trips that can be initiated that are related to the drive encoder feedback and whether they can be enabled and disabled by
Pr 3.40.
Reason for error
Power supply short circuit or overload on drive encoder terminals
+Hardware wire-break detect on A, B and Z inputs
Power supply short circuit or overload on option encoder supply
Speed feedback selected from an option slot that does not have a position
feedback category Solutions Module installed
Termination Overload
+These trips can be enabled/disabled by Pr 3.40
1. If the terminations are not enabled on the A, B or Z inputs the wire break system will not operate (5 V or 8 V only). (Note that as default the Z
input terminations are disabled to disable wire break detection on this input.)
Wire-break detection
It may be important to detect a break in the connections between the drive and the position feedback device. This feature is provided for most
encoder types either directly or indirectly as listed below.
Device
Ab, Fd, Fr Hardware detectors on the A(F), B(D,R) and Z signal detect a wire break
Power supply short circuit or overload on drive encoder terminals
There is an overload or short circuit on the drive encoder terminals.
Power supply short circuit or overload on option encoder supply
There is an overload or short circuit on the option encoder power supply.
Both the above trips can over ride trip Enc2 so if there is a wire break trip and then a power supply trip the drive will store both trips in the trip log. Both
the above trips turn the terminal encoder supply off.
52
Keypad and
FI DE Txt VM DP ND RA
Pr 3.39=1
Enabled
Enabled
Disabled
FI DE Txt VM DP ND RA
Function
(1)
Detection method
www.onxcontrol.com
Advanced parameter
format
Parameter description
NC NV PT US RW BU
1 1
Pr 3.39=2
Enabled
Enabled
Enabled
NC NV PT US RW BU
1 1
Drive trip
Enc1
Enc2
Enc3
Enc9
Enc10
Serial comms
protocol
descriptions
PS
PS
1
Drive Trip
Enc2
Mentor MP Advanced User Guide
Performance
Issue Number: 4