FANUC Series 16/18/160/180-Model C Connection Manual (Hardware)

6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
B–62753EN/01
116
5 to 22ms 5 to 22ms
Logical 0
(18 V or
higher)
Logical 1
(6V or
lower)
DC input signal
OFF (High)
ON (Low)
(Signal)
Chattering of 5
ms or less is ig-
nored.
Receiver output
signal
(Signal)
Fig. 6.6.1 (b) Signal width and delay of input signal
In the above figure, logical 0 corresponds to open contacts, while logical
1 corresponds to closed contacts.
Caution
When a source interface is used, a ground fault in an input
signal has the same effect as closing the contacts. From the
viewpoint of safety, therefore, FANUC does not recommend
the use of such an interface for input signals.
The output signals shall satisfy the following:
Maximum load current when driver is on:
200 mA (including momentary values)
Saturation voltage when driver is on:
1.0 V max.
Withstand voltage: 24 V +20% (including momentary values)
Leakage current when driver is off:
100 mA
Prepare the following external power supply for the output signals:
Supply voltage: +24 V "10%
Supply current (per board):
At least total maximum load current
(including momentary values) + 100 mA
Power–on timing: At the same time as or before turning on
the power to the control unit
Power–off timing: At the same time as or after turning on the
power to the control unit
6.6.2
Output Signal
Specifications for
Source Output Type
Connection Unit

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