Gelbau 462.4x User Manual

Operating instruction

br

br

A1

A2

Resistance evaluator 462.4x

Technical documentation

07.03.2007

Feature

The resistance evaluator 462.4x is a safety-switching unit designed for monitoring GELBAU Contact­Duo safety connecting blocks with a terminating resistance of 8,2 kΩ. The series 462.4x is a dual­channel version including redundancy monitoring.
The stop-outputs (13,14-23,24) include 2 forced safety relays and a reset-function. The additional two­way contact (31, 32, 34) is an alarm contact as well as an auxiliary contact.

The safety system corresponds to standards according to ZH1/494 as well as the European standard
EN1760-2 for connecting blocks corresponding to output-equipment.

Construction

Z1 Z2

Z4Z3

Terminal view

Y2Y1

462.4x

stop
break

ready

32

K1 K2

A2A1

K3

32313413 14 23 24

Y1 Y2 Z1 Z2

ws

Z4Z3

ws

AC

K1 K2

23 2413 14

34 31

13 14 23 24

+ DC -

Stop

8K2

8K2

Bridge Y1;Y2 = automatical reset

Function

The safety-switch unit is controlled by a closed circuit current. To start the device press reset-contact
(Y1, Y2).When correctly connected in ready-mode the safety contacts (13, 14-23, 24) are connected
and both green LED`s are on. If the Duo-contact-edge is activated (pressed) the relays K1 and K2 de­energise and the safety contacts (13, 14-23, 24) are open. The red LED is on (stop). If the closed­circuit current between Z1 and Z2 or Z3 and Z4 is interrupted the red (stop) LED is on and if in reset
mode even the yellow LED (break) is on. Safety-switches 13, 14-23, 24 are open.
The additional change-over contact 31, 32, 34 connects synchronous to STOP contact 13, 14.
An automatic reset can be achieved by connecting terminals Y1 – Y2.

Important: The additional change-over contact 31, 32, 34 is an auxiliary contact and must not be used
in safety-circuit.

Function table (status indication for sensor)
Sensor-profile condition

Correct connected; not activated on closed
Sensor 1 or2 activated (pressed) on open
Sensor 1 or2 interrupted
(disconnected or break)
*1 = only by activated reset or automatic reset

LED red LED yellow LED green

Output 13,14,23.24

(2x)

on on *1 open

E452x.doc
Gelbau GmbH & Co. KG D – 53859 Niederkassel – Ranzel Phone. 02208 / 9455-0 Fax 02208 /

9455-99 Page 1

Operating instruction

The installation and putting into operation of this device has to be

Resistance evaluator 462.4x

Technical documentation

07.03.2007

Assembly, Application

1. The switch-cabinet housing is ready for mounting on a 35 mm DIN rail (TS35) according to DIN

50022. For switchboard installation, a 26 mm rail-segment with 2 drillings is available.

2. The GELBAU contact-duo connecting-block(s) with an end-terminated resistor is connected to
clamps Z1 Z2 and Z3 Z4. Please note that the brown wire is connected to terminal Z1 (Z3) and the
white (blue) wire is connected to terminal Z2 (Z4).
If you want to install one contact-duo connecting-block (Z1,Z2) the second input must be
terminated with a 8,2kΩ resistor.

3. The safety-relay outputs 13,14-23, 24 may be loaded with max. 4 A (AC). The additional change­over contact 31, 32, 34 can be loaded with 4 A.(Max. switching voltage 250 V AC)

4. Power supply must be connected to terminals A1 and A2. The phase-wire is connected to A1.

done by qualified staff only.

Trouble shooting problems

1. LED`s are out of operation
Correct side voltage?

2. Constant glow of both red and yellow LED in manual or automatic-reset mode
Is the contact edge connected correctly or is there an interruption in the contact wire?
(Test switch shortly 8,2kΩ resistance between Z1,Z2 and Z3,Z4),interrupt if function is o. k.

3. Constant glow of red LED
Disconnect contact edge and examine it with an ohmmeter (value has to show approx. 8,2 kΩ).
Possibly short-circuit in lead-in wire?

4. Both channels show different status
Send device to your dealer for control and repair.

E452x.doc
Gelbau GmbH & Co. KG D – 53859 Niederkassel – Ranzel Phone. 02208 / 9455-0 Fax 02208 /

9455-99 Page 2