Mounting The Switches - Omron STI CM Series Operating Instructions Manual

INSTALLING THE CONTROL UNIT
The CM-Series control units are designed to fit standard 35mm symmetric
DIN rail.
TO FIT : Hook the unit onto the DIN rail (1) and gently push into place (2).
The catch should hold the unit securely in place.
TO REMOVE: Place the tip of a small screwdriver into the white catch at the
bottom of the box (1) and gently lever out. This releases the retaining clip
and allows the unit to be tilted (2) and removed (3).
INSTALLING THE SAFETY SWITCHES
The CM-Series safety switch sensors have 2 pre-drilled mounting holes and
are supplied with M4 x 20mm TORX Tamper Proof screws. (see page 7 for
dimension details)
The gate switches can approach each other from any angle (A), but must
end up with the arrows on the printed face pointing towards each other.
Mount the fixed part of the safety switch to the machine frame and the
actuator on to the opening edge of the door (B).
For the best results, mount the sensors with a gap of approximately 1mm.
when the guard is closed. This gives a high level of lateral tolerance to allow
for 'gate sag' and freedom from nuisance tripping due to machine / guard
vibration.
CONNECTING SWITCHES TO THE CONTROL UNIT
The CM-Series safety switches are supplied with 3 or 5 metres of cable
encapsulated into the
connection at the switch.
Cables can be extended using the same type of screened cable.
Run the cable back to the control unit through cable protection (if required)
and terminate into the appropriate control unit input channel.
Follow the color coding of the wires to the labels on the control unit input
terminals. i.e. BLUE wire to BL and DRAIN wire to DR.
IMPORTANT: Use the GATE inputs in sequence. Examples:
One Guard System—Use input 1 on the CM-S21 ( Or input 1 on the CM-S41 if E-Stop function required);
Three Guard System—Use inputs 1, 2 & 3 on the CM-S41;
Seven Guard System—Use inputs 1,2 & 3 for Guard Switches on the CM-S41 and Input 4 to connect to the CM-SE Extender
module Bus connection. Then use inputs 1,2,3 & 4 on the CM-SE.
1
2
1) Always try to mount the safety switch on non-ferrous material.
Ferrous materials will reduce the switching distance.
2) Leave a minimum 50mm gap between actuators. (A)
3) Avoid mounting the safety switch on the hinged side of the
door, as this may allow the door to be opened too far before the
switch de-activates. (B)
EN 1088
provides some mounting suggestions, see example (C).
When fixing the switches to a sliding door, ensure that when the
door is opened the switch is not easily accessible.
switch. This ensures a completely water-tight
GUARD SELECTOR & RESET SWITCHES
The central part of the CM-Series control unit lid (1) is removable. Using a small screwdriver in the
recess (2) gently pry the lid upwards. This allows access to the Automatic/Manual monitored Reset
switch and the Guard Selector Switch.
Using the table next to the relevant control unit overleaf, set the CM-Series control unit to the
required number of guard switch inputs and type of reset required.
IMPORTANT:
The number of inputs (safety switches) must match the gate selector setting.
Any incorrect setting will stop the system from operating correctly.

MOUNTING THE SWITCHES

1
ON
2
A
MAX. 100m
BL
DR
Control Unit
ISIS
CONTROL
UNIT
A
Min. 50mm
C
3
OFF
2
1
B
ISIS
Safety
SAFETY
Switch
SWITCH
WRONG!
B