Precautions for Correct Use
• Configure dual-channel inputs with safety input terminals on the same Unit. It is not always
possible to detect short circuits between safety input terminals on different Units.
• The total length of cable connected to one test output must be as follows:
NX-SIH400 and NX-SID800: 400 m max.
NX-SI
££££
T0
L
2
L
3
L
4
L
1
+ L
2
+ L
3
+ L
4
≤ 400m
Si0
Si1
L
1
Additional Information
You can detect short-circuits between two input channels with the following methods:
• Dual-channel equivalent input: "With Test Pulse"
• Dual-channel complementary input: "Without Test Pulse" and "With Test Pulse"
l
Devices with Semiconductor Outputs
The signal from a device with a semiconductor output, such as a light curtain, is input to a safety
input terminal (Si).
Si0
Si1
IOV
IOG
IOV
IOG
24 VDC
0 V
NX bus connection
Safety Light Curtain
The unit that supplies the I/O power
to the NX bus
NX-SI
oooo
Emitter
Receiver
Brown
Blue
Brown
Blue
Black
White
Control output 1 (OSSD 1)
Control output 2 (OSSD 2)
Example of Sysmac Studio Settings:
4 Safety Control Unit Operation
4 - 14
NX-series Safety Control Unit User's Manual (Z930)
Summary of Contents for NX-SIH400
Page 4: ...Introduction 2 NX series Safety Control Unit User s Manual Z930 ...
Page 46: ...Revision History 44 NX series Safety Control Unit User s Manual Z930 ...
Page 108: ...2 Specifications 2 42 NX series Safety Control Unit User s Manual Z930 ...
Page 132: ...3 Installation and Wiring 3 24 NX series Safety Control Unit User s Manual Z930 ...
Page 148: ...4 Safety Control Unit Operation 4 16 NX series Safety Control Unit User s Manual Z930 ...
Page 216: ...5 System Configuration and Setup 5 44 NX series Safety Control Unit User s Manual Z930 ...
Page 306: ...6 Programming 6 90 NX series Safety Control Unit User s Manual Z930 ...
Page 390: ...8 Calculating Safety Reaction Times 8 12 NX series Safety Control Unit User s Manual Z930 ...
Page 412: ...11 Safety Data Logging 11 10 NX series Safety Control Unit User s Manual Z930 ...
Page 504: ...12 Troubleshooting 12 92 NX series Safety Control Unit User s Manual Z930 ...
Page 554: ...l I O Map Settings Appendices A 42 NX series Safety Control Unit User s Manual Z930 ...
Page 623: ...I Index I 1 NX series Safety Control Unit User s Manual Z930 I ...
Page 625: ......