Terminal Number Signal
Description
TB18-2 (N/O)
When the unit has any one of the following alarm
conditions. Internal Failure, System Overheat, Battery
under-voltage.
TB18-3 (N/C)
TB18-4 (COM)
ON BYPASS
When the unit transfers the load to static by-pass.
TB18-5 (N/O)
TB18-6 (N/C)
TB18-7 (COM)
LOW BATTERY
When the unit is on battery operation and the
batteries approach inadmissible discharge status.
TB18-8 (N/O)
TB18-9 (N/C)
TB18-10 (COM)
INVERTER ON
Upon Inverter turned ON
TB18-11 (N/O)
TB18-12 (N/C)
TB18-13 (COM)
ON BATTERY
Upon loss of input power.
TB18-14 (N/O)
TB18-15 (N/C)
TB18-16 to TB18-18 Spare
Refer to Figure 8-1 for Interface terminal blocks.
8.19
Battery Thermal Runaway Control
This option provides protection in case of over-temperature condition in the battery compartment. If
such a condition occurs, this option shuts off the charger. Charging resumes when the temperature
returns to normal. A dry contact (N/O, N/C) relay interface is provided for this option for user interface
per following:
Terminal
Number
Signal
Description
TB121-1
N/C
N/C contact that opens when the critical temperature has
reached
TB121-2
COM
Common
TB121-3
N/O
•
N/O contact that closes when the critical temperature has
reached
•
Refer to Figure 8-1 for Interface terminal blocks.
8.20
Battery Breaker alarm
It provides a signal when the battery breaker is in OFF position.
Beghelli U
.S.A., 3250 Corporate Way, Miramar, Florida, Tel: (800) 726-4316 Tel: (954) 442-6600 Fax: (954) 442-6677
NOVA
6, 8, 10, 15 & 17KW