GFA TS981 - X20; X21 - Relay Contacts for Traffic Lights, Light Curtains or Magnetic Brakes; UBS-Connection

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X20 / X21 - Relay contacts for traffic lights, light curtains or magnetic brakes
You can connect more external devices, such as traffic lights, to terminals X20.1-X20.3 and X21.1-X21.3. X20
and X21 are potential-free relay contacts.
 Install the product according to the manufacturer‘s instructions.
 Connect the product as shown. You can connect traffic lights to terminals X20.1/ X20.2 or X21.1/X21.2.
 Activate the product after completion of the electrical installation with menu items P 2.7 / P 2.8.
NOTICE
Damage to components!
The maximum current at 230 V AC is 1 A and at 24 V DC 0.4 A. Exceeding these values may lead to the
malfunctioning of the devices.
20.1
20 .2 20 .3
H1
1. 9 1. 8
21.1 21.2 21.3
X20/
H2
Y1
G1
C1
20.1
20.2 20.3 1.9 1.8
21.1 21 .2 21 .3
X20/
X20
20 .1 20 .2
20.3
A16
X21
21.1
21 .2
21.3
A17
Traffic lights red/green
H1 Traffic light green
H2
Traffic light red
Magnetic brake
G1 Rectifier
Y1 Ma
gnetic brake
External devices
i
NOTE
We recommend the use of LED
trafficlights
with 230 V
.
UBS-Connection
The UBS system is a simple pluggable connection technology from GfA. The control devices
are connected to the control by a commercially available patch cable and detected
automatically. UBS devices have the same functions as wired control devices
Examples for UBS-Connection
Triple pushbutton Reflective photocell External radio receiver