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Digital I/O Units Section 4-6
4-6-4 Eight-point Transistor Output Units: GRT1-OD8 (NPN), GRT1-
OD8-1 (PNP), and GRT1-OD8G-1 (PNP)
Output Specifications
Note With the GRT1-OD8G-1, even if a short-circuit occurs on one output, the
other seven outputs will operate normally.
Component Names and Functions
(Same for GRT1-OD8, GRT1-OD8-1, and GRT1-OD8G-1)
Item Specification
Model GRT1-OD8 GRT1-OD8-1 GRT1-OD8G-1
Internal I/O common NPN PNP PNP
Number of I/O points 8 outputs
Rated output current 0.5 A/point max.
Output overcurrent and
short-circuit protection
Not supported. Not supported. Supported (with automatic
recovery). (See note.)
Residual voltage 1.2 V max. (at 0.5 A between
each output terminal and G)
1.2 V max. (at 0.5 A between each output terminal and V)
Leakage current 0.1 mA max.
ON delay time 0.5 ms max.
OFF delay time 1.5 ms max.
Number of circuits 8 outputs with one common
LED indicators
Indicate the Unit's status.
Terminal Block
A1A2
A3A5
A4
A6
B1 B2
B3
B6B4
B5
Test pin
Release button
Terminal insertion hole
OD8
TS
0
1
2
3
4
5
6
7
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