EtherNet/IP™ CIP Safety™ IP67 HarshIO 600
37
IP67 Safety Digital I/O Modules
Bipolar Safety Outputs (TCDEC-8B4B-D1U-Gx and TCDEC-8B4B-DYU-Gx)
Bipolar safety outputs are used to drive the state of output devices.
The bipolar outputs combines the safety sourcing output and the safety sinking output of the same M12
connector as a output pair in dual channel mode and can support current up to 2A.
Note!
HarshIO bipolar safety outputs are:
current sourcing at max. 2A.
always configured in dual-channel mode meaning that a maximum of two safety
output devices can be connected to a HarshIO module.
short circuit protected
A bipolar Safety Output can be configured as:
Not Used
(default) - The bipolar outputs are disable and
don’t participate in any safety function.
Safety Pulse Test
- The output sourcing generates a pulse test (when the output is active) to monitor
short-
circuit between output sourcing signal and power supply (stuck at “1”). The output sinking
generates a pulse test (when the output is active) to monitor short-circuit between output sinking signal
and ground (stuck at “0”).
Note!
Using the HarshIO SNCT software,
Each safety bipolar output pair can be configured individually with or
without pulse test.
The Pulse test length is configurable from 300µs to 10ms, in increments
of 100µs, with a default value of 700µs. In the case of bipolar outputs,
pulse management has been designed in order that the default value
should work in almost applications, including applications where the
resistive and capacitive load of the connected device or sub-system can
vary during operation. It is then strongly recommended to keep default
value unchanged. Changing this parameter should be done only if an
issue is observed during application testing.
Pulse test period: 468ms
In addition to external shorts detection, all safety functions involved in
outputs switch-off are also diagnosed at each period. So a series of 4
pulse tests are applied on each safety output.
Содержание TCDEC-8B4B-D1U-G8
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