Notes On Configuration - Siemens 3RP25 Manual

3.5

Notes on configuration

Prerequisites
NOTICE
Potential property damage.
Only change the time setting range or function in the de-energized state.
Start input
The control signal at B1 may only be applied when the supply voltage is already present at
A1 / A2.
Same potential
The same potential must be applied at terminals A1 and B1. This means the supply voltage
and the control signal must be identical.
Combination voltage
With combination voltage versions, only one voltage range must ever be connected at one
time. Never apply both control voltages simultaneously.
Parallel load at the start contact
A circuit with parallel load is permissible with AC and DC on the 3RP25 timing relays.
Positively-driven contacts
When using positively driven contacts with 3RP2502-xRW30, the same power supply /
voltage must be used for both changeover contacts.
3RP25 Time Relays
Manual, 09/2019, A5E31947765002A/RS-AC/003
Description
3.5 Notes on configuration
19