Pfeiffer Vacuum A 1204H, Operating Instructions Manual

Page: 55 / 92

Control interfaces
55
8.4.3 Wiring of analog inputs
Fig. 16: J3 connector: analog output wiring
8.5 Command of an inlet isolation valve via J4 connector
8.5.1 Description
Connection made via the connector J4 (Female D-Sub - 15 pin connector) (see 4.2) al-
lows:
– the opening and closing remote control of the inlet isolation valve(s),
– monitoring of the status of the valve(s).
The control mode and type of valves concerned must be set in [DEFINITION] [INLET
VALVE] menu, the timer must be set in [SETTING] [SOFT P VALVE] menu (see 8.2) .
1 2 3 4 5 6 7 8
15 14 13 12 9 10 11
0V
A
2
A
1
A
3
G
N
D
G
N
D
Contact Function
A1 (5-13) IN_ANA_SPEED Rotation frequency setpoint (0/10 V input) (see 7.9) :
– for the maximum frequency: the voltage applied is between 0 and 3 V,
– for the intermediate frequency: the voltage applied is between 3 and 7 V,
– for the minimum frequency: the voltage applied is between 7 and 10 V.
A2 (15-13) IN_ANA_USER Setpoint between 0 and 10 V.
Used to monitor data by setting warning and alarm thresholds and a triggering timer: see parameter set-
ting
[SETTINGS] [ANALOGIC INPUT] [USER ANA] (see 8.2) .
A3 (6-13) IN_TEMP_USER Used to connect a temperature probe and to monitor it, setting warning and alarm thresholds and a trig-
gering timer, see parameter setting
[SETTINGS] [TEMPERATURE] [USER T°] (see 8.2) .
NOTICE
Extra low voltage circuit
The remote control circuits are equipped with dry contact outputs (30 V - 1 A max.).
Any overvoltage or overcurrent can result in internal electrical damage. The installer
must:
Connect these outputs in accordance with the rules and protection of safety extra low
voltage (SELV) circuits,
Supply these contacts with voltage of less than 30 V and current of less than 1 A.