Pfeiffer Vacuum A 1204H, Operating Instructions Manual

Page: 57 / 92

Control interfaces
57
8.6.2 Wiring of digital inputs
Fig. 19: J5 connector: digital input wiring
8.6.3 Wiring of analog inputs
Fig. 20: J5 connector: wiring of analog inputs
8.6.4 Wiring of the digital outputs
Contact Function
S1 (1-4) Roots 2 frequency
converter status Contact closed: Roots 2 starts.
Contact open: Roots 2 stops.
S2 (2-4) Roots 2 frequency
converter warning Contact closed: no warning
Contact open: there is a warning on Roots 2.
S3 (3-4) not used
1 2 3 4 5 6 7 8
15 14 13 12 9 10 11
S2
GND
S1 S3
GND
S5
Contact Function
A1 (10-11) Roots 2 temperature Used to connect a temperature probe and to monitor it, setting
warning and alarm thresholds and a triggering timer, see parameter
setting
[SETTINGS] [TEMPERATURE] [ROOT 2 T°] (see 8.2) .
A2 (12-13) Roots 2 power Setpoint between 0 and 10 V.
Used to monitor Roots 2 power by setting warning and alarm thresh-
olds and a triggering timer: see parameter setting
[SETTINGS]
[POWER] [R2 POWER] (see 8.2) .
RX /TX
(14-15) RS485 Reception/
Transmission data RS485 communication.
1 2 3 4 5 6 7 8
15 14 13 12 9 10 11
GND
TX RX
A1 A2
GND
Contact Function
7-9 Roots 2 start-up (contact closed whent Roots starts)
8-9 IDLE mode management
– contact open: maximum speed of rotation
– contact closed: reduced speed of rotation
5-6 (S5) Roots 2 frequency converter alarm
Contact closed: no alarm.
Contact open: there is an alarm on Roots 2.
If Roots 2 alarm musn’t stop the pump, contact 5-6 must be strapped.