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Inputs
USB connection
The MSC base unit MSC-CB-S has a USB 2.0 connection for a PC on which the EUCHNER Safety Designer configuration
software is installed.
MSC configuration memory (M-A1)
An optional backup memory card (M-A1) for saving the software configuration parameters can be installed in the MSC base
unit MSC-CB-S. When new projects are transferred from the PC to the module MSC-CB-S, these projects are automatically
written to memory card M-A1.
RESTART_FBK
The MSC can use the RESTART_FBK signal to monitor a feedback loop signal (external device monitoring – EDM) from
external contactors. Both manual and automatic types of starting can be programmed (see section "RESTART_FBK" in the
manual on the supplied CD-ROM).
WARNING
Ì
If necessary, the response time of contactors must be checked using an additional device.
Ì
The command switch for starting (RESTART) must be installed outside the danger zone in a place
from which there is a clear view of the danger zone and the entire working area affected.
Ì
It must not be possible to actuate the command switch from inside the danger zone.
Outputs
OUT_STATUS
The signal OUT_STATUS is a programmable digital output for the indication of the state of:
Ì
an input
Ì
an output
Ì
a node on the logic diagram designed with the aid of EUCHNER Safety Designer.
OUT_TEST
The inputs and the cables can be monitored for short circuits or overload states using the OUT_TEST signal.
OSSD
The static semiconductor safety outputs OSSD (Output Signal Switching Device) are short circuit proof, monitored for short
circuits, and supply:
Ì
In the ON state: U
– 0.75 V to U
V
Ì
In the OFF state: 0 – 2 V rms.
The maximum load of 400 mA at 24 V corresponds to a minimum ohmic load of 60 Ω.
The maximum capacitive load is 0.82 µF, and the maximum inductive load is 2 mH.
NOTICE
Ì
For more information about safe OSSD outputs, refer to the section "OSSD" in the manual on the
supplied CD-ROM.
2541031-01-10/20 (translation of the original operating instructions – brief operating instructions)
(with U
= 24 V ±20%)
V
V
MSC-CB-AC-FI8FO4S
9
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