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Figure 8.1
9. CURRENT MONITOR/ALARM
The ELC-24/10-M-D battery charger includes an
integrated current monitor/alarm that monitors the
output current of the charger. If the charger output
falls below the current limit setting, a green LED
indicator is turned off and a Form C, dry contact
alarm relay is actuated.
adjustment, LED, and relay terminals are accessible
on the front of the charger (see Figure 9.1).
Current Monitor Status
Charger output exceeds the current limit setting
Charger output falls below the current limit setting
(and AC power is present at the charger)
AC power is removed from the charger
www.nationalrailwaysupply.com
1-800-357-3572
The current limit
(after approx. 30
Table 9.1
4
Relay Terminal Remote Wiring
The OPEN, COMMON, and CLOSED relay contacts
have push-in type terminals for remote wiring. The
relay contacts are rated for 1A at 30 Vdc or 0.5A at
120 Vac. A small screwdriver (3/32 inch maximum
blade width) is required to insert or remove a wire
from a relay terminal.
WARNING:
BE
UNINSULATED METAL TOOL CONTACTS BOTH
THE GROUNDED CHARGER CASE AND A
RELAY TERMINAL PUSH-IN TAB, THIS WILL
CAUSE A POTENTIALLY DAMAGING AND/OR
DANGEROUS ELECTRICAL SHORT.
Current Monitor/Alarm Operation
Table 9.1 outlines the operation of the LED and
relay based on the status of the current monitor. All
relay contact states are with reference to the
terminal strip COMMON.
LED
CLOSED
Relay Contact
On
Closed
Off
(after approx. 30
seconds)
seconds)
Off
(immediately)
(immediately)
Figure 9.1
CAREFUL!
OPEN
Relay Contact
Open
Open
Closed
(after approx. 30
seconds)
Open
Closed
(immediately)
IF
AN
38502A
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