eFlowNB - Power Supply/Chargers
- 5 -
Wiring:
Use 18 AWG or larger for all low voltage power connections.
Note: Take care to keep power-limited circuits separate from non power-limited wiring (120VAC, Battery)
Maintenance:
Unit should be tested at least once a year for the proper operation as follows:
Output Voltage Test: Under normal load conditions, the DC output voltage should be checked for
proper voltage level.
Battery Test:
Under normal load conditions check that the battery is fully charged, check specified
voltage (12VDC @ 13.2 or 24VDC @ 26.4) both at the battery terminal and at the
board terminals marked [– BAT +] to ensure that there is no break in the battery
connection wires.
Replacing Batteries:
Disconnect existing batteries. Connect battery to the terminals marked [– BAT +].
Use two (2) 12VDC batteries connected in series for 24VDC operation.
LED Diagnostics:
Red (DC)
Clear (AC1) /
Green (AC)
Power Supply Status
ON
ON
Normal operating condition.
ON
OFF
Loss of AC. Stand-by battery supplying power.
OFF
ON
No DC output.
OFF
OFF
Loss of AC. Discharged or no stand-by battery. No DC output.
Terminal Identification:
Terminal
Legend
Function/Description
L, G, N
Connect 120VAC 60Hz to these terminals: L to hot, N to neutral,
G to ground (non power-limited) (Fig. 1a, pg. 4).
– DC +
(Fig. 1h, pg. 4)
eFlow4NB:
12VDC or 24VDC @ 4A continuous output (Power-Limited output).
eFlow6NB:
12VDC or 24VDC @ 6A continuous output (Non Power-Limited output).
eFlow102NB: 12VDC @ 10A continuous output (Non Power-Limited output).
eFlow104NB: 24VDC @ 10A continuous output (Non Power-Limited output).
Trigger EOL
Supervised
Fire Alarm Interface trigger input from a short or FACP. Trigger inputs can be normally open,
normally closed from an FACP output circuit (Power-Limited input) (Fig. 1d, pg. 4).
NO, GND
RESET
FACP interface latching or non-latching (Power-Limited) (Fig. 1c, pg. 4).
+ AUX –
Auxiliary Power-Limited output rated @ 1A (unswitched) (Power-Limited output)
(Fig. 1f, pg. 4).
AC Fail
NC, C, NO
Indicates loss of AC power, e.g. connect to audible device or alarm panel.
Relay normally energized when AC power is present.
Contact rating 1A @ 30VDC (Power-Limited) (Fig. 1b, pg. 4).
Bat Fail
NC, C, NO
Indicates low battery condition, e.g. connect to alarm panel.
Relay normally energized when DC power is present. Contact rating 1A @ 30VDC.
A removed battery is reported within 5 minutes.
Battery reconnection is reported within 1 minute (Power-Limited) (Fig. 1b, pg. 4).
– BAT +
Stand-by battery connections. Maximum charge current 1.54A (non power-limited)
(Fig. 1g, pg. 4).
