Integration of a SITOP 24V power supply in PCS 7
Entry ID: 10948108, V3.2, 01/2019
5.2 UPS1600 with monitoring of the signal contacts
The DC UPS is monitored using the external peripherals. To do this, the signal
contacts of the module are connected to the digital inputs of the external
peripherals.
Figure 5-10
The UPS1600 makes available the following three signal contacts for signaling the
status:
Relay 1: Buffering mode or OFF (changeover switch)
Relay 2: Buffer not ready, rechargeable battery defective (changeover switch)
(The system displays a defective rechargeable battery by the changeover switch
changing its position in a 0.25 Hz cycle.)
Relay 3: Rechargeable battery charge > 85% (normally open contact)
The following figure shows the selected wiring on the signal terminal:
Figure 5-11
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