PSR-TRISAFE-S
3-16
PHOENIX CONTACT 103503_en_03
3.7.2 Connecting the supply voltage
The PSR-TRISAFE-S safety module has no main switch and is switched on simply by
applying the supply voltage.
The safety logic and alarm outputs are supplied with power via connections A1/A2, the safe
outputs, clock outputs, and ground switching outputs are supplied via connections 24V/0V.
Once the "PWR" status indicator is permanently on, the PSR-TRISAFE-S safety module is
ready to operate.
3.7.2.1 Direct connection of the supply voltage on the PSR-TRISAFE-S
Connect the supply voltage as follows:
1. Supply voltage for the safe module outputs, the clock and ground switching outputs at
terminal block contacts "0V" and "24V", as shown in the diagram below.
2. Supply voltage for the logic of the safety module and the alarm outputs at terminal block
contacts "A1" (24 V) and "A2" (0 V).
Once the supply voltage has been applied, the PSR-TRISAFE-S safety module executes an
initialization routine (all LEDs on).
Figure 3-11 Connecting the supply voltage at A1/A2 and 24V/0V
3.7.2.2 Supply via system power supply unit
As an alternative, the devices can be supplied using the
MINI-SYS-PS-100-240AC/24DC/1.5 system power supply unit (Order No. 2866983). The
devices are then connected via the PSR TBUS DIN rail connector.
Usually the system power supply unit is mounted as the first device in a topology. A second
power supply unit can be used to create a redundant supply concept.
Outputs "A1" and "A2" provide the supply voltage for supplying other modules, such as
sensors (see "Supply connections A1 and A2" on page 3-9).
Connections
24 V DC/0 V
"PWR" status indicator
Connections
A2 (2 terminal blocks each)A1
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