Maxcess Cygnus MAGPOWR, Instruction Manual

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TROUBLESHOOTING
www.maxcessintl.com CYGNUS MI 850A316 1 B Page 41 of 66
Table 1.
Load cell diagnostics
21 mv Load Cells
All voltages without a code that are not in the Normal Range are unspecified faults.
Normal Range is 0.00 VDC +/- 0.25 VDC
TB6-2 (S+) -5.000 -1.667 -1.000 0.000 1.000 1.667 2.500 5.000
TB6-1 (S-)
-5.000 A D
-1.667 J M G
-1.000 P
0.000 C L Normal O E
1.000 Q
1.667 H N K
2.500 I
5.000 F B
CODE
21 mv Load Cells (Could be either load cell or cable)
Probable Fault
A TB6-4 (P+) open
B TB6-3 (P-) open
C TB6-4 (P+) to TB6-2 (S+) leg open
D TB6-4 (P+) to TB6-1 (S-) leg open
E TB6-3 (P-) to TB6-2 (S+) leg open
F TB6-3 (P-) to TB6-1 (S-) leg open
G (TB6-4 (P+) and TB6-2 (S+) reversed) or (TB6-3 (P-) and TB6-1 (S-) reversed)
H (TB6-4 (P+) and TB6-1 (S-) reversed) or (TB6-3 (P-) and TB6-2 (S+) reversed)
I P- is wired to Ground. Should be wired to TB6-3.
CODE
21 mv Load Cells (Could be either load cell or cable)
Probable Fault
J
TB6-4 (P+) open
K TB6-3 (P-) open
L TB6-4 (P+) to TB6-2 (S+) leg open
M TB6-4 (P+) to TB6-1 (S-) leg open
N TB6-3 (P-) to TB6-2 (S+) leg open
O TB6-3 (P-) to TB6-1 (S-) leg open
P (TB6-4 (P+) and TB6-2 (S+) reversed) or (TB6-3 (P-) and TB6-1 (S-) reversed)
Q (TB6-4 (P+) and TB6-1 (S-) reversed) or (TB6-3 (P-) and TB6-2 (S+) reversed)
Voltage one either 500 mv Load Cell
TB6-1 (S+) or TB6-2(S+)
Probable Fault
Negative
Wired to -5 Vdc. Should be wired to
Ground
0.000 Wired to -5 Vdc. Should be wired to
Ground
Signal and Ground leads reversed.
Power lead
open
2.500 Normal voltage
5.000 Ground lead
open
Signal and Power leads reversed.