Logic Alarm Cable Connection And Functions - GRAPHTEC GL840 User Manual

CHAPTER 2 Checks and Preparation

2.6 Logic Alarm Cable Connection and Functions

This section describes how to connect the logic alarm cables.
During wiring, confirm that the signal's supply source is turned OFF to prevent electrical shocks.
Also, position the GL840 input cable away from any power lines and ground cables.
The Input/out put cable for GL (B-513: Option) enables logic/pulse input, external trigger input, and alarm
signal output.
Connect the Input/out put cable for GL (B-513: Option) to the external input/output terminal as shown below.
Logic/Pulse Input Specifications
Number of input channels
Input voltage range
Threshold level
Hysteresis
* Switch between logic and pulse input.
Trigger Input/External Sampling Input Specifications
Number of input channels
Input voltage range
Threshold level
Hysteresis
Alarm Output Specifications
Number of Output channels
Output format
When the power is turned OFF or ON, the GL840 temporarily becomes the alarm state.
2-8
Input/out put cable for GL
(B-513: Option)
Item
4
0 to +24V max. (single-ended ground input)
Approx. +2.5V
Approx. 0.5 V (+2.5 to +3 V)
Item
1
0 to +24V max. (single-ended ground input)
Approx. +2.5V
Approx. 0.5 V (+2.5 to +3 V)
Item
4
Open collector output
+5 V, 10 KΩ pull-up resistance
* See the next page for details on alarm output
Description
Description
Description