User Instructions

www.pulsar.pl ROUPS12V RACK POWER
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1. Technical description.
1.1. General description.
The ROUPS12V buffer power supply unit is designed for uninterrupted power supply of requiring stabilized
voltage of 12V DC (+/- 15%). The PSU provides voltage of U=13,8V DC current efficiency max. I=18A + 2A battery
charge. In case of power decay, a battery back-up is activated immediately. The PSU output protected independently
with melting fuse 20A. The power supply is fitted with the ALARM output of collective failure. In case of failure, relay
contacts are switched automatically, which is accompanied by acoustic and optical indication (the corresponding led goes
on). The power supply construction is based on the switch mode PSU with high energy efficiency and is located in an
enclosure adapted for mounting in standard RACK 19” cabinets.
AUX power supply output can be split into 8 or 16 outputs with the use of RACK fuse modules:
- the RLB8 (RACK 8x2A fuse modules)
- the RLB16 (RACK 16x1 fuse modules)
1.2. Block diagram.
Fig.1. The block diagram of the PSU.
1.3. Description of PSU components and connectors.
Table 1. Elements of the PSU.
Element no.
[Fig. 2]
Description
AC OK – green LED, indicating the presence of 230V voltage
DC OK – green LED, indicating the presence of DC voltage
Green LED AUX – voltage indication at the output AUX
LED ALARM – red LED failure indication
TEMP – red LED, indicating too high temperature of the power supply (>70°C)
LoB – red LED, indicating too low battery voltage (<11,5V)
BAT – battery output
AUX – power output
ALARM – technical output of collective failure – relay
BUZZER, micro switch, turning ON / OFF of acoustic indication
switch in the top position, indication ON
switch in the down position, indication OFF
F
AUX
, melting fuse F20A
230V AC INPUT, power socket 230V AC, power cable 1,5m included
F
MAINS
, fuse in the supply circuit 230V AC, T 6,3A/250V