I-GARD DSP-OHMNI Instruction Manual
8
Figure 4.3 Alternative Sensor Wiring
Shunt Trip
Supply
Sensor 1
Sensor 2
Sensor 3
Sensor 4
To
DSP-DSM
G
S
NO NC COM
6
7
8
9
10
DSP-DFM
G
S
NO NC COM
6
7
8
9
10
DSP-DFM
G
S
NO NC COM
6
7
8
9
10
DSP-DFM
G
S
NO NC COM
6
7
8
9
10
DSP-DFM
Figure 4.2 Preferred Feeder Module DSP-DFM Wiring
NOTE:
For Main-Tie-Main systems and multiple sources with tie breakers the priority buses can be joined together with the use
of I-Gard devices DSP-CAS and DSP-CA Modules. The DSP-CA module converts ribbon cable to a
n
8-conductor shielded cable
for this purpose. The DSP-CAS does the same thing except that it includes an electronic switch to make or break the connections
when the tie breakers are closed or open. This eliminates the use of 8-pole contactor arrangements of previous systems. The two
modules are DIN rail mounted similar to the other DSP modules in 70mm wide housing. See information on DSP-CA(S) or manual
C-414EM for typical wiring.
Shunt Trip
Supply
Sensor 1
Sensor 2
Sensor 3
Sensor 4
To
DSP-DSM
X1
X2
X1
X2
X1
X2
X1
X2
G
S
NO NC COM
6
7
8
9
10
DSP-DFM
G
S
NO
NC COM
6
7
8
9
10
DSP-DFM
G
S
NO NC COM
6
7
8
9
10
DSP-DFM
G
S
NO
NC COM
6
7
8
9
10
DSP-DFM
