D1555_D1558 installation manual 29042022 V5
4
12V Power Output
Terminal blocks are provided to connect to the system. The output is floating and can be referenced to
earth if required. The output is controlled by the ON/OFF input (see below).
The output is electronically short circuit and overload protected and suitable for switching highly
inductive loads. The short circuit protection is intelligent, and power will be restored when a short is
removed when still connected to the load, requiring no further user/installer intervention.
The output switch-on retry time is adaptive and will be extended to a maximum of 18 seconds after a long
duration short to prevent excessive switch power dissipation.
The PSU power rail is continuously monitored for over-voltage and in the event of a high voltage
condition, the output will be automatically switched off and a fault signalled
LED Indications
The status of the PSU is displayed by three LEDs, see below for their meaning:
KEY
●
LED on
○
LED off
☼
LED blinking
State
OK LED
GREEN
BAT LED
YELLOW
FLT LED
RED
AC ON
●
○
○
AC OFF
○
●
●
Output Off, AC ON
☼
○
○
Output Off, AC Off
○
☼
●
Output Fault, AC ON
●
○
●
Output Fault, AC OFF
○
●
●
Battery Fault, AC ON
●
●
●
Low Battery Fault, AC OFF
○
●
●
Output Off, AC ON, Battery Fault
☼
☼
●
Output Off, AC ON, Output Fault Pending
☼
○
●
Output Off, AC OFF, Output Fault Pending
○
☼
●
Output Off, AC OFF, Low Battery Fault
○
☼
●
Output On, AC ON, Over Voltage Fault
●
○
●
Output Off, AC ON, Over Voltage Fault
☼
○
●
