2-11
Main system supply (MSS), Continued
MSS LEDs and
jumpers
Tables 2-12 and 2-13 list the details associated with the LEDs and jumpers on the MSS.
Table 2-12. MSS LED Functions and Indications
LED number Silkscreen name Status
LED1 IDNet POS. EARTH ON = IDNet POS. EARTH (Note)
LED2 IDNet NEG. EARTH ON = IDNet NEG. EARTH (Note)
LED3 IDNet
STEADY = NO DEVICE DETECTED
BLINK = SHORT CIRCUIT TRBL
LED4 IDNet CIRCUIT A ON = CLASS A / OPEN TRBL
LED5 IDNet CIRCUIT B ON = CLASS A / OPEN TRBL
LED6 4100 COMMS ON = COMM LOSS
LED7 GENERAL POWER TRBL
STEADY = OVERCURRENT
SINGLE BLINK = POS. EARTH
DOUBLE BLINK = NEG. EARTH
TRIPLE BLINK = BATTERY TRBL
QUAD BLINK = CHARGER TRBL
LED8 AC POWER ON = MSS POWER FROM AC MAIN
LED9 NAC1 NAC1 TRBL or NAC1 “ON”
LED10 NAC2 NAC2 TRBL or NAC2 “ON”
LED11 NAC3 NAC3 TRBL or NAC3 “ON”
LED12 NAC4 NAC4 TRBL or NAC4 “ON”
Note: The IDNet circuit on the MSS is electrically isolated and has its own earth fault detection circuit.
The IDNet earth fault detection circuit detects a 10K Ohms (or less) stray impedance to earth
ground.
Table 2-13. MSS Jumper Functions
Jumper
number
Silkscreen name Position Function
P1 IDNet CIRCUIT B
CLASS B (STYLE 4) (Note 1)
CLASS A (STYLE 7)
1-3, 2-4
3-5, 4-6 (DEFAULT)
P2 IDNet CIRCUIT A
CLASS B (STYLE 4) (Note 1)
CLASS A (STYLE 7)
1-3, 2-4
3-5, 4-6 (DEFAULT)
P3 EARTH DETECT (Note 2)
ENABLE
DISABLE
1-2 (DEFAULT)
2-3
P7
LOW BATTERY
DISCONNECT
DISABLE (DOMESTIC)
ENABLE (CANADA)
1-2 (DEFAULT)
2-3
Note 1. When jumpers are set for Class B (Style 4) on IDNet, you may use both the B-side and the A-side
to wire devices. Thus, for Circuit B, you can have two pairs of wires per side or four branches per
circuit.
2. Only one power module should be set for earth fault monitoring for each location within a system.
Normally, the MSS is set to monitor for earth faults. The earth fault detection circuit will detect a
10K Ohms (or less) stray impedance to earth ground. The expansion battery charger (XBC,
4081-9306, -9308) may also be set to monitor for earth faults. When an XBC is used to provide
battery backup for a 4010ES panel, disable the earth fault detection on the XBC.