20
M
ain C
on
tr
oller
Boar
d
Ether
net Option
I/O Slot 1 Sensor B
oar
d
Ribbon Cable
Po
w
er Supply
Ear
th Gr
ound
Ter
minal Block
Fuse
Neutr
al
Ter
minal
Block
M
ain P
ow
er
Ter
minal Block
A
nalog O
utput
,
Sensor & Dig
ital I
nput
Ter
minal Blocks
Po
w
er/R
ela
y
Boar
d
Rela
y O
utput
Ter
minal Block
D
ual A
nalog
O
utput Option
I/O Slot 2 Sensor B
oar
d
Figure 5 Parts Identification