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3
PRSU Series, Operating Instructions Manual (Revision 1.0)
PRSU/2 Electrical Overview
The PRSU/2 can be operated with an input voltage of +24VDC, or 24VAC. This model
features two normally-
open safety relays that are triggered by the “Sensor Monitoring”
terminals (S11, S12, S21, S22).
Terminals
Description
A1
Power input (+24V
DC
,
or
24V
AC
)
A2
Power input (GND,
or
24V
AC
)
13, 14
Safety Relay #1
23, 24
Safety Relay #2
S33, S34
RESET Mode Control
S11, S12
Sensor Connection
S21, S22
Sensor Connection
Figure 1: Functional Schematic (PRSU/2)
Table 1: Device Terminals (PRSU/2)
