Pfeiffer Vacuum A 1204H, Operating Instructions Manual

Page: 54 / 92

54
Control interfaces
8.4 Remote control J3 connector
8.4.1 Description
Connection made via the connector J3 (Male D-Sub - 15 pin connector) (see 4.2) allows:
– Remote control of pump functions: start, stop and IDLE mode,
– input of the speed setpoint and its monitoring,
– input of a temperature probe and monitoring of this temperature.
8.4.2 Wiring of digital inputs
Fig. 15: J3 connector : digital input wiring
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.
Contact Function
S1 (1-9) USER1 [DEFINITION] [ IDLE MODE] [ENABLED]
Selection mode IDLE, see table below.
S2 (2-10) USER2
S3 (3-11) USER3
S4 (7-8) Pump Start/Stop Contact closed: pump starts.
Contact open: pump stops.
This function is valid when
[DEFINITION] [CONTROL MODE] [US-
ER] is selected (see 8.2) .
IDLE option Contact status Stand-by valve Rotation speed HHR display
S1 S2 S3
Full 1 0 0 closed minimum IDLE MODE
Intermediate 0 1 0 closed intermediate STD BY N2
Reduce speed 0 0 1 opened minimum IDLE MODE
Stand-by purge 1 1 1 closed maximum STD BY N2
Standard 0 0 0 opened maximum --
1 2 3 4 5 6 7 8
15 14 13 12 9 10 11
S1 S2
+24V
GND
S3 S4