6
Short-term delivery l Subject to technical modications
4 OPERATION
After the input voltage (IV) is switched on the supply voltage is measured and the corresponding system voltage (12V or 24V) is auto-
matically selected. Approx. 1.5 seconds after switch-on the output voltage is released and the connected consumers are supplied.
The back-up capacitor is also charged. This operating mode is signalled through illumination of the green LED ‘IV OK’. The capacitors
can only be charged if the supply voltage is greater than the system voltage (voltage in back-up mode).
4.1 BACK-UP MODE
If the supply fails or the voltage is less than the minimum input voltage the RDCUSV C module switches to back-up mode. The green
LED ‘IV OK’ goes out.
Whenever an LED lights up it activates the corresponding signalling relay
(see circuit diagram in section 2.2).
4.2 SHUT-DOWN
Back-up operation can be aborted through application of a +24VDC control voltage to terminals 1 (+) and 2 (-) of the ‘I/O’ terminal
block. This causes the connected consumers to be able to be switched off in a defined state. In addition through premature switch-off
a certain amount of residual energy remains in the capacitor. This shortens the length of any subsequent capacitor charging process.
5 MAINTENANCE
The interior of the unit contains no parts to be maintained by the user.
The unit should be cleaned regularly when dirty.
6 SHUTDOWN
Shutdown is carried out through switch-off of the supply voltage. To avoid subsequent back-up operation and discharge of the capa-
citors it is possible to switch off the module without back-up operation by activating the shutdown ().
(s. point 4.2). All LEDs must go out in the process.
CAUTION
During operation no electrical connections should be detached or connected! Doing so may result in arcing
lines and subsequent burns.
7 STANDARDS AND REGULATIONS
Terminal voltage SELV / PELV according to EN 60950 / EN 50178
Electromagnetic interfe-
rence
EN 61000-3-2 and EN 61000-3-3 Class A, EN 55011 Class B, EN 62040-2
Interference resistance
EN 62040-2, EN 61000-6-2
EN61000-4-2 (Electrostatic discharge ESD) 8kV/6kV
EN61000-4-3 (Electromagnetic elds) 10V/m 27 – 1000MHz
3V/m 1400 - 2700MHz
EN61000-4-4 (Burst) DC IN, DC OUT 2kV (Other 1kV)
EN61000-4-5 (Surge) DC IN 0.5kV
EN61000-4-6 (Radiated immunity) 10V 150kHz – 80MHz
EN61000-4-11 (Voltage drops) Bypassing by ultracapacitors
Overall unit
EN 50178 / EN 60950
UL 508
C22.2 Nr. 107.1-01
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