
Operation User
Manual
October 2015
QCL-MAN-CT2211-Aerosol-Leak-Detection-System-Rev F
Operation
28
Table 5-1 IO lines
Terminal
number :
Line description
System input/output
See Section
number :
20 Linestop Input
5.3.1
21 Shutdown
system
Input
5.3.2
22 Spare
Input
N/A
23 Spare
Input
N/A
24 Spare
Input
N/A
25 Return Input
N/A
26 Linestop
1
Output
5.3.3
27 Linestop
2
Output
5.3.3
28 Heartbeat
Signal
Output
5.3.4
29
Reject Pulse Count
Output
5.3.5
30 Not
Available
Output N/A
31 Return Output
N/A
Inputs to Control System : Terminals 20 — 24 (+24V), Return Terminal 25 (0V)
Outputs From Control System : Terminals 26 — 30 (+24V), Return Terminal 31 (0V)
The wiring numbers for each of the input and output lines can be found in the system
wiring diagram.
Each of the individual IO lines is described below:
5.3.1
Linestop (in)
A positive Linestop voltage input signal from the conveyer to the Control System
indicates the conveyer is working within its operational parameters. A 0.0V signals the
line is stopped.
5.3.2
System shutdown signal (in)
The system shutdown signal allows the control system to be deactivated remotely. If
the signal is high, the control system continues to function. If the signal is low, the
control system switches off.
5.3.3
Linestop 1 and linestop 2 (out)
The control system provides two output signals to stop the production line if there are
errors on the system. The two outputs can be configured to trigger for different errors.
If the linestop signals are high, the system is healthy; if either or both of the linestop
signals are low, the production line should be stopped.
5.3.4
Heartbeat signal (out)
The heartbeat signal is the hardware watchdog output. If the signal is high, then the
system is running normally. If the system is low, the watchdog has detected an error,
and the system should be reset.
5.3.5
Reject counter pulse (out)
For each can removed from the production line by the rejector, a 100ms counter pulse
is sent on this output line. This allows the line PLC to know how many cans have been
rejected by the control system.