Instruction manual

10
Ensure unit is off and power is disconnected prior to making
connections to the REMOTE connector terminals to avoid
damaging the power supply or connected devices.
• Connect external Remote Shutdown control lines (TTL
compatible signal) to the REM SD+ (pin 1) and REM SD- (pin
2) terminals of the “REMOTE” connector on the back panel if
external on/off control of the power supply output is required.
(Hi = output off, Lo = output on) (Does not alter the state of the
Battery contactor on units with the LVD option)
• Connect remote voltage sense lines (16-26AWG twisted pair)
from the REM SNS+ (pin 3) and REM SNS- (pin 4) terminals of
the “REMOTE” connector on the back panel to the external
load connections if required for tighter voltage regulation at the
load. (Default voltage regulation sense point is at the output
bus bars if Remote Sense is not connected).
• To keep the remote sense lead voltage compensation accuracy
to within about 2% of the total load cable voltage drop, remote
sense lead resistance should be kept to below 0.5ohms each.
For example 15m (50ft) of 20AWG wire would be about
0.5ohms in resistance. Longer remote sense lead connections
can be made using larger wire sizes, or relaxing remote sense
voltage compensation accuracy expectations.
• Connect external alarm monitoring input wiring to the Alarm
Output contacts on the REMOTE connector to enable the
internal Alarm relay contact closure to flag an external
monitoring system that the power supply has encountered a
fault condition. (See section 5.4 Alarm Setup, for details on
which fault conditions will trip the Alarm Output contacts).
Pin Number Name Note
5 Common Alarm Output common
6 NO
Alarm Output normally open
contact (0.5A 125Vac max)
7 NC
Alarm Output normally closed
contact (0.5A 125Vac max)
3. FRONT PANEL CONTROL