4
Operating instructions
Position switches
EX-Z/T 355
EN
Length-adjustable lever (7H, 10H)
To adjust the length of the lever, unscrew the fixing screw of the lever.
Firmly retighten the screw after the length adjustment.
Position switches with 7 H or 10 H actuator are not suitable
for safety functions. Ordering suffix for actuator 7H with positi-
ve break: -2138.
3.5 Actuation of the position switches
Top plunger
A
A End stop
Roller plunger
max. 30°
Cam disc
front side
Trailing edge
4. Electrical connection
4.1 General information for electrical connection
The electrical connection may only be carried out by autho-
rised personnel in a de-energised condition.
The contact labelling can be found in the wiring compartment of the
switch.
Cable glands (included in delivery) are only authorised for permanent
cables. The constructor must provide for the necessary strain relief.
After wiring, dust and soiling must be removed from the wiring compart-
ment.
4.2 Contact variants
Contacts are shown with safety guard closed.
1 NO contact / 1 NC contact 2 NC contact
EX-Z/T 355-11Z-3G/D
EX-Z/T 355-02Z-3G/D
13
21
14
22
A
11
21
12
22
A
A
2 NO contact
1 NO contact /
2 NC contacts
EX-Z/T 355-20Z-3G/D
EX-Z/T 355-12Z-3G/D
13
23
14
24
13
21
31
14
22
32
A
A
3 NC contact
EX-Z/T 355-03Z-3G/D
11
21
31
12
22
32
A
A
A
Position switches with two NO contacts (-20) are not suitab-
le for safety functions.
