162 Rockwell Automation Publication 7000-UM202H-EN-P - November 2023
Chapter 3 Control Component Definition and Maintenance
Figure 138 - 20-pin Interface Module (IFM)
Quadrature Encoder Operation
The universal encoder interface accepts either single or dual quadrature
encoders. Configure the board to accept the encoders through jumpers on J4.
Boards shipped from the factory come default to single quadrature encoder
configuration. For dual encoder configurations, the primary encoder wires to
pins 1… 7 on the 1492-IFM20 module.
To select the dual encoder option, remove the CD_QUAD jumper and place it
in PARK. This configures the board to accept two individual quadrature
encoders. In this mode, the drive can switch between encoders for applications
such as Synchronous Transfer between two motors with each having their own
encoder.
For the redundant encoder option, remove both the CD_QUAD and
POL_QRDNT jumpers and place them in PARK. With this configuration, the
drive will switch over to the redundant encoder when it detects a problem with
the primary encoder.
When the drive switches over to the redundant encoder, it cannot switch back
without recycling control power.
13 Z2+ (redundant or dual ENC) E10
14 Z2- (redundant or dual ENC) E11
15 ENC_COM ENC_COM
16 ENC_COM ENC_COM
17 ENC_COM ENC_COM
18 ENC PWR (+12V) ENC PWR (+12V)
19 ENC PWR (+12V) ENC PWR (+12V)
20 ENC PWR (+12V) ENC PWR (+12V)
IMPORTANT Consult the factory for availability of dual quadrature encoder options.
Table 15 - Encoder Functions (Continued)
IFM Pin # Quadrature Encoder Function Absolute Encoder Function
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