Unit model number
Terminal block
Model Number of terminals Ground terminal mark Current capacity
NX-SOH200 NX-TBA081 8 Not provided 4 A
NX-TBA082 10 A
NX-SOD400 NX-TBA081 8 Not provided 4 A
NX-TBA082 10 A
Precautions for Correct Use
You can mount either NX-TB£££1 or NX-TB£££2 Terminal Blocks to the Units that the cur-
rent capacity specification of the terminals is 4 A or less.
Even if you mount an NX-TB
£££2 Terminal Block, the current specification does not change
because the terminal current capacity of the Unit is 4 A.
Refer to the I/O power supply terminal current capacities given in Individual Specifications on
page 2 - 29 for the terminal current capacity specifications of the Units.
Refer to A-11 List of Screwless Clamping Terminal Block Models on page A - 96 for informa-
tion on the models of terminal blocks.
2-3-3
Indicators
This section describes the indicators of the Safety Output Unit.
WARNING
Do not use the status of the indicators on the NX-series Safety Control
Units for safety operations.
This will compromise the safety functions of the Unit and may cause
serious injury in the event of an accident.
The indicator pattern depends on the number of output points, as shown below.
Unit with 4 I/O
Points
Unit with 2 I/O
Points
(A)
(B)
Letter Name Function
(A) Model number dis-
play
Displays part of the model number of the Safety I/O Units.
The model number indication is red on Safety Control Units.
(B) Indicators Show the current operating status and communications status of the Safety I/O
Units.
Safety Output Unit Operation Status Indicators
There are the indicators to show the operation status of Safety Output Unit in the center of the front
side of the Safety Output Unit.
2 Specifications
2 - 38
NX-series Safety Control Unit User's Manual (Z930)
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