MAYSER SG-EFS 1 4 ZK2/1 L20ms Series Operating Instructions

Safety Control Unit SG-EFS 1X4 ZK2/1 L20ms
with automatic or manual reset
Reset
SG-EFS 1X4 ZK2/1 L20ms
Auto- channel channel
Reset 1
2
fault indicator
relay
sensor
Operating
Instructions
Safety Control Unit with
EEC-type-examination
certificate
EN 954 Category 3
with forceguided contacts for increased
safety requirements;
for Pressure Sensitive Mats, Safety
Edges and Safety Bumpers with
1.2 kΩ monitoring resistor.
These operating instructions apply to
the following control units:
SG-EFS 104 ZK2/1 L20ms
SG-EFS 134 ZK2/1 L20ms 230 V~

Control

The single-fault-safe electronics module
has two channels (redundant).
Each channel triggers a force guided
relay. The relays self-test by contact
return after each switching cycle. The
electronics monitor the electrical resi-
stance of the connected sensors which
have a specific closed-circuit current.
When the sensors are not activated,
both output relays are energized and
both yellow LEDs light. If a sensor is
activated, or a break occurs in the sup-
ply to the control unit, relays K1 and K2
deenergize and the LEDs go out.
Erroneous tripping signals, caused by
falling material, are prevented by 20 ms
by means of a time element.

Enclosure

W × H × D (mm) 45 × 75 × 105
Protection class
Plug-in connectors each 8-channel
Cable clamps max. 2.5 mm
Weight = model approx. 175 g
~ model approx. 270 g
Notes on protection class:
The units may only be used in locations
with a minimum protection class of
IP 54 (eg. cabinet).

Parts supplied

- Control Unit
Enclosure with electronics module and
plug-in connectors.
- Operating Instructions
24 V=/~
IP 20
2