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eFlowNBV Power Supply/Chargers Installation Guide
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 (220VAC, 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 is 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 220VAC, 50/60Hz to these terminals: L to hot, N to neutral,
G to ground
(Fig. 1a, pg. 5)
.
– DC +
(Fig. 1h, pg. 5)
eFlow3NBV:
12VDC or 24VDC @ 2A continuous output (power-limited output) .
eFlow4NBV:
12VDC or 24VDC @ 4A continuous output (power-limited output) .
eFlow6NBV:
12VDC or 24VDC @ 6A continuous output (non power-limited output) .
eFlow102NBV:
12VDC @ 10A continuous output (non power-limited output) .
eFlow104NBV:
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. 5)
.
NO, GND
RESET
FACP interface latching or non-latching (power-limited output)
(Fig. 1c, pg. 5)
.
+ AUX –
Auxiliary Power-Limited output rated @ 1A (unswitched) (power-limited output)
(Fig. 1f, pg. 5)
.
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. 5)
.
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. 5)
.
– BAT +
Stand-by battery connections . Maximum charge current 1 .54A (non power-limited)
(Fig. 1g, pg. 5)
.
