4. Electrical connection
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– WTS-300-E - V4.1 - 20.01.2022
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4.5 Wiring the digital inputs
Terminals 39 to 46 are digital optocoupler inputs. These are used to monitor and
process external switching contacts. These switching contacts must be potential-
free! The signal provided by the controller at terminal 38 must be fed separately to
each individual switching contact.
39
38
41
40
43
42
44
46
45
A
2
1
A
2
2
A
2
3
A
2
4
A
2
5
A
2
6
A
2
7
A
2
8
4.6 Connection robot
If the WTS-300 and the robot have a separate power supply, the robot can still be
stopped (by corresponding connection) in the event of power failure.
Robot requires an active signal to stop
(high-active)
[A41] = 0:
In the event of a power failure, the robot is not stopped
(Connection to terminal 6 / 4)
[A41] = 2:
In the event of a power failure, the robot is stopped
(Connection to terminal 6 / 5)
Robot needs to lose the signal to stop
(low active)
[A41] = 1:
In the event of a power failure, the robot is stopped
(Connection to terminal 6 / 4)
[A41] = 3:
In the event of a power failure, the robot is not stopped
(Connection to terminal 6 / 5)
4.7 Connection of external pressure sensor (optional)
Terminals 27 | 28 | 29 must be used only for the connection of an external pressure
sensor. See section 10.5
Internal power supply
via terminal 27
12 V +/- 3 V - max. 40 mA
If the sensor cannot be pow-
ered by internal power supply:
Use external power supply.
Parameter assignment
Connect digital inputs with
potential-free contacts!
Digital inputs
from robot
from robot
Connection pressure sensor two-wire
Connection pressure sensor three-wire
Pressure sensor
two-wire
signal
4..20 mA
signal
4..20 mA
signal
4..20 mA
signal
4..20 mA
Pressure sensor
two-wire
Pressure sensor
three-wire
Pressure sensor
three-wire
NOTICE
