Configuration and operation, Operation – Computronic Controls Sentinel 300P User Manual
Page 8
Sentinel 300P installation, operation & maintenance
ci0039 p8/12 issue 9 2015-09-04
After the POST sequence, the LEDs revert to indication of
operating status. See LED Indication section below.
Auto mode battery detection
Immediately after power-
up, if an ‘Auto’ charge profile has
been selected, the Sentinel 300P measures the connected
battery voltage and operates as follows:
Measured
voltage
Operation
< 1 V
No output: battery missing fault signalled.
1 to 16.0 V
Charge output: 12V vented lead acid.
16.1 to 32 V
Charge output: 24V vented lead acid.
Float mode
If measured battery voltage is within normal limits (above
12.5 V for 12V nominal batteries, and above 25.0 V for
24V nominal batteries), Sentinel adopts float mode
charging, indicated by a constantly lit yellow LED. Sentinel
maintains the battery at the float voltage (appropriate for
the selected battery type), and supplies any additional DC
load current (up to the maximum rated 10 Amps).
Battery check
When in float charge mode, Sentinel periodically checks
for a ‘battery missing’ fault. During this check, output
current reduces to nominal (12 or 24V) for approx. 30
seconds and the yellow LED goes off.
The default period for checking ‘battery missing’ is every
30 minutes, but this time can be adjusted using the
SNTL300P-PCSUITE configuration tool. Once Sentinel
registers a battery missing fault, it checks for reconnection
once every minute (non-adjustable).
Sentinel does not check for ‘battery missing’ during
AutoBoost operation, to ensure maximum charge rate is
maintained.
AutoBoost
If measured battery voltage falls below the Boost Initiate
threshold (below 12.5 V for 12V nominal batteries, or
below 25.0 V for 24V nominal batteries), Sentinel adopts
AutoBoost mode (indicated by a slow-flashing yellow LED)
and charge output increases to the higher Boost voltage
level.
Once measured battery voltage has increased to the
Boost level, Sentinel enters a Boost Extension period (360
mins on standard units), during which time Boost voltage
is maintained and the yellow LED flashes rapidly.
At the end of the Boost extension period, output voltage
and current reduces, but the yellow LED continues to flash
rapidly. In this Boost Decay phase, battery voltage
naturally decreases back towards float level. Sentinel then
reverts to float mode charging, indicated by a continually lit
yellow LED.
AutoBoost can also be initiated manually by an operator,
regardless of battery voltage. This is achieved on standard
units through input 2: after input activation, e.g. by a
momentary push-to-make panel switch, Sentinel goes
through a single AutoBoost cycle.
Configuration and Operation
Operation
Power-up and POST sequence
At power up, Sentinel goes through a POST (Power On Self Test) sequence, including status indication using 4 LEDs
(located on the main circuit board above connector CN2). The sequence is:
POST LED display
1)
LED test: all lit for 2 sec, all off for 2 sec:
2)
Indication confirming standard 300P calibrations, 2 sec:
Flashing sequence:
3)
Indication confirming selected charge profile, 2 sec:
Nominal
voltage
Battery type
Profile name
DIP switch settings
(0 = off/down, 1 = on/up)
1
2
3
4
5
6
Auto /
local
12 or 24 wet (vented) lead acid
AUTO DETECT
(Local)
0
0
0
0
0
0
Flashing:
Auto /
remote
AUTO DETECT
(Remote)
0
0
0
0
1
0
Flashing sequence:
12V
Wet (vented) lead acid, 6 cells
12V WET LA
0
0
0
1
0
0
Calcium Calcium, 6 cells
12V CA/CA
0
0
1
0
0
0
Lead acid hybrid Sb-Ca, 6 cells
12V LA HYBRID
0
0
1
1
0
0
VRLA, AGM, 6 cells
12V VRLA – AGM
0
1
0
0
0
0
VRLA, Gel, 6 cells
12V VRLA – GEL
0
1
0
1
0
0
NiCd, 10 cells
10 CELL NiCd
0
1
1
0
0
0
12V power supply
12V POWER SUPPLY
0
1
1
1
0
0
24V
NiCd, 18 cells
18 CELL NiCd
1
0
0
0
0
0
NiCd, 20 cells
20 CELL NiCd
1
0
0
1
0
0
Wet (vented) lead acid, 12 cells
24V WET LA
1
0
1
0
0
0
Calcium Calcium, 12 cells
24V CA/CA
1
0
1
1
0
0
Lead acid hybrid Sb-Ca, 12 cells 24V LA HYBRID
1
1
0
0
0
0
VRLA, AGM, 12 cells
24V VRLA - AGM
1
1
0
1
0
0
VRLA, Gel, 12 cells
24V VRLA - GEL
1
1
1
0
0
0
24V power supply
24V POWER SUPPLY
1
1
1
1
0
0