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Scroll Protection Module (SPM) —
SPM per compressor and it is responsible for controlling that
compressor. See Fig. 4. The device controls the compressor
contactor and the compressor crankcase heater. The SPM mod-
ule also monitors the compressor motor temperature, and cir-
cuit high pressure switch. The SPM responds to commands
from the MBB (main base board) and sends the MBB the
results of the channels it monitors via the LEN (Local
Equipment Network). See below for SPM board address infor-
mation. See Table 4 for SPM inputs and outputs.
SPM-A1 DIP
1
2
Switch
Address:
ON OFF OFF OFF ON OFF OFF OFF
SPM-A2 DIP
1
2
Switch
Address:
OFF ON OFF OFF ON OFF OFF OFF
SPM-A3 DIP
1
2
Switch
Address:
OFF OFF ON OFF ON OFF OFF OFF
SPM-A4 DIP
1
2
Switch
Address:
OFF OFF OFF ON ON OFF OFF OFF
SPM-B1 DIP
1
2
Switch
Address:
ON OFF OFF OFF OFF ON OFF OFF
There is one
3
4
5
6
7
3
4
5
6
7
3
4
5
6
7
3
4
5
6
7
3
4
5
6
7
ON
1
2
3
F1
QC1
QC2
SMD
Fig. 4 — Scroll Protection Module
SPM-B2 DIP
Switch
Address:
SPM-B3 DIP
Switch
Address:
SPM-B4 DIP
Switch
Address:
SPM-C1 DIP
8
Switch
Address:
SPM-C2 DIP
8
Switch
Address:
SPM-C3 DIP
8
Switch
Address:
SPM-C4 DIP
8
Switch
Address:
8
LED2
LED1
5
7
4
6
8
D4
Q4
JP5
C19
D6 D5
D9
Q6 D8 Q3
C46
D13 D14
LOCATION OF
SERIAL NUMBER
7
1
2
3
4
5
OFF ON OFF OFF OFF ON OFF OFF
1
2
3
4
5
OFF OFF ON OFF OFF ON OFF OFF
1
2
3
4
5
OFF OFF OFF ON OFF ON OFF OFF
1
2
3
4
5
ON OFF OFF OFF OFF OFF ON OFF
1
2
3
4
5
OFF ON OFF OFF OFF OFF ON OFF
1
2
3
4
5
OFF OFF ON OFF OFF OFF ON OFF
1
2
3
4
5
OFF OFF OFF ON OFF OFF ON OFF
D7
Q5
U3
6
7
8
6
7
8
6
7
8
6
7
8
6
7
8
6
7
8
6
7
8
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