MAN0443.P65 Issue 13 Aug 04
5701 Control System
05701-M-5001 A02279
CHAPTER 4 - INSTALLATION INSTRUCTIONS
4 - 29
Link Positions
LK10
LK13
Note: Where a sensor is earthed locally, either to the Earth Stud or
through the sensor casing or mounting, to avoid earth loops the
screen sheath of the cable should only be connected at one end,
i.e., at the sensor or at the Interface/Relay Card.
Loop Powered Sensor (Measuring Resistance in Supply Return)
LK4
Junction
Box
Red
Red
Green/
Yellow
Sensor
Screen
SensePoint
Toxic Sensor
SignalPoint
Toxic Sensor
Blue
Blue
S
01
Screen
Junction Box
Terminal Block
01
S
-
+
Single Channel Control Card 4 - 20mA 05701-A-0301
Fitted with 4 - 20mA Sensor Drive 05701-A-0283
Relay/Field Interface
Card
05701-A-0326
05701-A-0327
05701-A-0328
05701-A-0329
05701-A-0330
S
01
-
+
Arrows Indicate
Direction of Loop
Current Flow
Screened
Cable
Earth Terminal
811, 911 ECC, S2000
Toxic Sensor
27
Brown
Blue
Junction Box
Terminal Block
Junction
Box
Green/Yellow
Cabinet
Protective
Earth
S
01
28