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Installation
Start Input
UNINTENDED EQUIPMENT OPERATION
Do not use the Start function for safety-related purposes.
Use Monitored Start or Startup Test if unintended restart is a hazard according to your risk
assessment.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
The start input consists of one control output DC+ (terminal Y1) and one input channel CH+
(terminal Y2).
The control output provides a nominal voltage of 24 VDC to the connected sensor/device. It is also
used for dynamization
The wiring of the start input depends on the start function
For automatic start, bridge terminals Y1 and Y2 or connect terminal Y2 to an external 24 VDC
power supply.
For manual start or monitored start and if the control output Y1 (DC+) is to be used:
Connect terminals Y1 and Y2 to the device providing the start signal, such as a push-button.
For manual start or monitored start and if the device providing the start signal is supplied externally:
Connect terminal Y2 to the device providing the start signal, such as a push-button or a logic
controller. Leave terminal Y1 unconnected.
The common reference potential is established via terminal B2.
Respect the maximum wire resistance of 500 Ω when determining the cable length. The maximum
wire length between the start input and a sensor/device is 30 m (98.43 ft) if the supply via the
control output (terminal Y1) of the start input is not used.
54
WARNING
(see page
43) .
(see page
65) to be implemented.
HR9Z-B2192 8/2020
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