Layout and connection examples
Relay outputs33-pin terminal blocks for 115/230 V inputs4
24 V DC
50
51
52
RO4C
RO4A
RO4B
70
71
72
HDI7
HDI8
NEUTRAL
115/230 V AC
Common, CRO4C50115/230 V input 1HDI770
Normally closed, NCRO4B51115/230 V input 2HDI871
Normally open, NORO4A52Neutral pointNEUTRAL
1)
72
Common, CRO5C53115/230 V input 3HDI973
Normally closed, NCRO5B54115/230 V input 4HDI1074
Normally open, NORO5A55Neutral pointNEUTRAL
1)
75
Grounding screw1115/230 V input 5HDI1176
Hole for mounting screw2115/230 V input 5HDI1277
Diagnostic LED. Green = The extension module
is powered up.
5Neutral pointNEUTRAL
1)
78
1)
Neutral points 72, 75 and 78 are connected.
210 CHDI-01 115/230 V digital input extension module