rotork p3 - Fig 22: Pakscan P3 Current Wired Loop System Block Diagram (Single Master Station)

P3 - Pakscan Master Station Technical Manual
26 of 136 Publication PUB059-002-00 Issue 06/15
POWER
SUPPLY
MAINS
SUPPLY
L N E
PORT 1
PORT 2
PORT 3
PORT 4
1
2
3
4
5
4
5
6
1
2
3
SCR
Actuator Terminals
Actuator Terminals
Actuator Terminals
B C A
SCR
A
C B
A
C
B SCR
ALARM
EMERGENCY
SHUTDOWN
Screen
Screen
Port A OUT
Port A IN
Port B OUT
Port B IN
PS710 MODULE
(PROCESSORS
AND DISPLAY)
P3 MASTER
STATION ‘A’
PS720 MODULE
(CURRENT LOOP
CONTROLLER)
SIGNAL EARTH BAR
If there is a signal earth bar,
connect the screen on one side only
to the bar.
Either connect cable
screen to terminals 3 & 6
OR to signal earth bar, but
not to both.
Fig 22: Pakscan P3 Current Wired Loop System Block Diagram (single master station)
Note: If there is no hard-wired ESD requirement a shorting link must be fitted across pins 4 and
5 of the PS710 module