Omron CQM1H - 08-2005 - Page 142

117
Wiring and Connections Section 4-7
Terminal Blocks The following diagram shows the terminal blocks for the AC Power Supply
Units.
Note 1. The wire used should be at least 2 mm
2
.
2. Provide the grounding point as close to the CQM1H PC as possible.
3. Tighten the terminal screws to a torque of 0.8 N
⋅m.
4. LG ( or ):
Noise filter neutral terminal. Short-circuit the LG ( or ) terminal and
GR ( ) terminals using the short-circuit bar and ground them at a resis-
tance of less than 100
Ω to reduce noise and prevent electric shock.
5. GR ( ):
Protective earth terminal. Connect to a separate ground wire of at least
2mm
2
to ground the terminal at a resistance of less than 100 Ω to prevent
electric shock.
6. When supplying voltage at 100 V AC with the CQM1-PA216, the voltage
selector terminals must be shorted, and when supplying voltage at 230 V
AC the must be open. When power is supplied at 230 V AC using the
CQM1-PA216, remove the short-circuit bar (provided as an accessory)
that shorts the voltage selector terminals. The Unit will be damaged if
230 V AC is supplied with the short-circuit bar connected.
CQM1-PA203
LG
GR
CQM1-PA206
AC
input
Use an AC power supply
between 100 and 240 V AC.
Use the 24 V DC, 0.5 A ter-
minals to supply power to
DC Input Units.
AC
input
Use an AC power supply
between 100 and 240 V AC.
Noise filter neutral terminal
(see note 4)
Protective earth terminal
(see note 5)
Noise filter neutral terminal
(see note 4)
Protective earth terminal
(see note 5)
CQM1-PA216
AC
input
Use an AC power supply
of 100 or 230 V AC.
Use the 24 V DC, 0.5 A
terminals to supply power
to DC Input Units.
Voltage selector (see note 6)
Short: 100 V AC
Open: 230 V AC
Protective earth terminal
(see note 5)
LG
GR