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7
C
3
1
3 (+)
1 (-/S)
E
C
B
A
D
1
2
3
1 (S)
2 (-)
3 (+)
B
E
D
D
A
2
Wiring arrangements
Please ensure you read the paragraph: Special Specifications for use in Potentially Explosive
Atmospheres in Accordance with European Directive ATEX 94/9/EC
2.1
3-Wire version (OLC 20d, OLCT 20d)
Figure 2
A
B
C
D
E
OLDHAM controller
OLC or OLCT 20
Grounding
Power supply
Signal (I)
2.2
2-wire versions (OLCT 20d)
Figure 3
A
B
C
D
E
OLDHAM controller
OLC 20 or OLCT 20
Grounding
Power supply
Power supply
Signal