Omron HOME SECURITY SYSTEM - MOTION SENSOR FQM1-MMA21 - Manual (Page 84)

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Wiring Section 3-2
Terminal Screws and
Crimp Terminals The terminals on the Power Supply Unit use M4, self-raising terminal screws.
Note (1) Use crimp terminals for wiring.
(2) Do not connect bare stranded wires directly to terminals.
(3) Tighten the terminal block screws to a torque of 1.2 N·m.
Use M4 crimp terminals for AC power supplies.
!Caution Tighten AC power supply terminal block screws to a torque of 1.2 N·m. Loose
screws may cause shorts, malfunctions, or fire.
Note (1) Supply power to all of the Power Supply Units from the same source.
(2) Do not remove the protective label from the top of the Power Supply Unit
until the wiring has been completed. This label prevents wire strands and
other foreign matter from entering the Unit during wiring procedures.
(3) Do not forget to remove the label from the top of the Power Supply Unit
after wiring the Unit. The label will block air circulation needed for cooling.
Grounding
• GR is the ground terminal. To help prevent electric shock, ground this ter-
minal to less than 100
Ω and use special ground wire (minimum cross-
sectional area of 2 mm
2
).
7 mm max.
M4 self-raising terminal screws
Tightening torque 1.2 N • m
20 mm max.
Crimp Terminals for AC Power Supply
POWER
PA205R
DC24V
AC240V
OUTPUT
RUN
INPUT
AC100-240V
L2/N
L1
LG (Noise-filtered neutral terminal)
Ground separately with a resistance of
less than 100
Ω to increase resistance to
noise and to prevent electric shocks.
GR (Ground)
Ground this terminal separately to less
than 100
Ω to prevent electric shock.