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Alcatel Vacuum Technology France - ASM 180 TD/TD+ - ASM 181 TD+ User’s Manual
Controlling the detector
with the I/O interface
1/2
Edition 03 - May 97
Prepare the
connector wiring
Connect the jumper plug
if the I/O interface
is not used
23 Interface
22 Calibration
8 Cycle
20 Filament
18 GL mode
17 LDS mode
16 Inlet vent
Contact open:
the detector is controlled by the I/O interface,
the operator can not access the keys
on the control panel or the filament key
on the remote control unit.
Contact closed:
the unit is controlled by the operator interface.
Falling edge:
Autocalibration sequence start
Falling edge: Cycle start
Closed: Filament on
Closed: Gross Leak mode selection
Closed: LDS mode selection
Closed: Automatic vent mode selection
13
25
23 24
22
21
22
8
20
18
17
16
23
14 15
1
0V 24VDC
24
23
14
1
0V
The controls
(inputs)
The common
points of the
controls are
pins 21 and
24.
This makes it possible to control the detector using a PLC.
In the absence of external control, the jumper plug supplied with
the detector must be kept in place in order to use the operator
interface (contacts 23-24 connected):
Note: if contacts 22 and 8 are kept closed to ground,
the "cycle" and "autocal" keys on the operator interface
are inactive.
It is recommended to use a shielded cable which is grounded
on the connector cap.