Rockwell Automation 1440-SPD02-01RB XM-220 Dual Speed Module - Manual (Page 33)

Publication GMSI10-UM004B-EN-P - May 2010
Installing the XM-220 Dual Speed Module 25
Figure 2.13 Buffered Output Connections
Connecting the Switched Buffered Output
The XM-220 can be configured to automatically switch to a second
(redundant) sensor when a transducer or tachometer fault is detected on the
current sensor. When the module is functioning in redundant mode, it
provides a third buffered output which outputs a signal corresponding to the
active input signal. This allows you to accurately track the machine speed
regardless of which of the redundant sensors is active. The signal from the
switched buffered output is a CMOS (0 to 5 volt) level square-wave.
IMPORTANT
The voltage operating range of the buffered outputs must
be configured to coincide with the corresponding
transducer bias range. This operating range is configured by
placing a jumper from terminal 5 (channel 1) and terminal
22 (channel) to either terminal 6 (Positive Buffer Bias) or
terminal 21 (Buffer -), depending on the transducer. See
Table 2.2. The buffered output operating range is
configured independently per channel.
Table 2.2 Configuring Buffered Output Input Range
Transducer Input Range Channel Connect Terminal To Terminal
Negative Bias -24 to +9V 1 5 21
2 22 21
Positive Bias -5 to +24V 1 5 6
2 22 6
Non-Bias -5 to +9V 1 --- ---
2 --- ---