
Installation
26
GA 09.033/6.02 – (2011-07) –
©
Oerlikon Leybold Vacuum
3.6 CONTROL Connector
This connector allows to read the measurement signal,
to evaluate state of the floating switching function and
error contacts, and to activate/deactivate the high vac-
uum measurement circuit (only for PTR 225 cold cath-
ode gauge and ITR 100 ionization vacuum gauge).
Operation via the CONTROL connector (input
HV_H,
→
26) has priority over key operation.
DANGER
DANGER: protective low voltage
According to EN 61010, voltages
exceeding 30 VAC or 60 VDC are
hazardous.
If you are using CENTER ONE as
desk-top unit you may only connect
a protective low voltage (SELV).
Connect the peripheral components to the
CONTROL connector on the rear of the unit.
Use a screened cable (electromagnetic com-
patibility).
Pin assignment
Pin assignment of the 9-pin D-Sub appliance connector:
Pin Signal
1
2
3
4
5
6
7
8
9
Analog output
Switching function off
(n.c. contact)
Switching function
(common)
Switching function off
(n.o. contact)
Control input HV_H
On = +24 V
Off = 0 V
+24 V
Chassis
Error (n.o. contact)
Error (common)
The analog output (pin 1) differ from the
displayed value by no more than ±50 mV.