Alarm Wiring - Sens Q012-012 Installation & Operation Manual

6.3

Alarm Wiring

Each charger comes standard with one Summary alarm that allows the user to monitor several alarms at once
with one set of dry contacts. Connect alarm wiring to the Summary alarm terminal block on the Control
Printed Circuit Board (see FIG 3).
Two different individual alarm relay package options are available, only one of which can be installed at a
time. The Standard Alarm Relay Printed Circuit Board offers five alarm discrete Form C contacts. The Ex-
tended Alarm Relay Printed Circuit Board offers seven discrete Form C contacts plus a pilot relay. The pilot
relay automatically closes when the charger enters EQUALIZE mode , and opens when the charger reverts to
FLOAT mode (see FIG 3). Connect additional alarm wiring to the alarm terminal blocks on either Alarm
Relay Printed Circuit Board (see FIG 3). See TABLE 4 for alarm pin designations. The alarm wires should
be connected from COM, through user supervisory system, then to either FAIL or OK.
Conduit knockouts are provided on the upper right side of the charger for alarm wires (see FIG 2). Wire
gauge between 14 and 28AWG may be used for the alarm connection wires. Alarm and data interface wiring
must be kept at least 1/4" (6.3mm) away from input conductors, output conductors, and from other uninsulat-
ed electrical parts not connected to the alarm or data conductor. Use the provided wire positioning devices to
hold alarm and data wiring away from other circuits and hot surfaces.
Figure 3: Alarm contact terminal blocks
CONTROL PRINTED
CIRCUIT BOARD
(located on charger door)
STANDARD RELAY
ALARM PRINTED
CIRCUIT BOARD
(optional and located in
top front of charger)
EXTENDED RELAY
ALARM PRINTED
CIRCUIT BOARD
(optional and located in
top front of charger)
PILOT RELAY
TB11
Service Hotline: 1.800.742.2326
1.303.678.7500
WARNING:
FOR 12V AND 24V OUTPUT CHARGERS, CONNECT ALARM TERMINALS ONLY
TO LOW VOLTAGE LIMITED ENERGY ("CLASS 2" or "CLASS 3") CIRCUITS.
ALARM AND PILOT RELAYS ARE RATED 30VDC/VAC AT 2.0A.
FOR 48V AND HIGHER OUTPUT CHARGERS, ALARM AND PILOT RELAYS ARE
RATED 30VDC AT 2.0A AND 125VAC AT 0.25A (RESISTIVE) MAXIMUM.
ESD SHIELD
NOTE:
ESD Shield must remain in
place at all times, including
during installation
SUMMARY ALARM
TERMINAL BLOCK
TB1
ALARM
TERMINAL BLOCKS
TB4 — TB7, TB9
ALARM
TERMINAL BLOCKS
TB4 — TB10
SENS IQ Technical Manual
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