Operating instructions

MAN0443.P65 Issue 13 Aug 04 5701 Control System
05701-M-5001 A02279
CHAPTER 4 - INSTALLATION INSTRUCTIONS
4 - 51
Three Wire Control Card Current Source, Transmitter Current Sink Connection for Digi
Series (Signal Returned to +24V Supply)
1
2
3
4
Block Sensor Connections
Wiring Digi-Cat Digi-Chem Digi-Ana
Catalytic ECC Analogue
Terminal
Signal Colour Signal Colour Signal Colour
1 GND - GND - - -
2 NS Blue C Brown 01 Blue*
3 C/T White R White 0V/NS -
4 S Brown W Blue +24V Brown*
* Valid for 811 and 911. For other sensors, see sensor documentation.
01
NS
Single Channel Control Card 4 - 20mA 05701-A-0301
Fitted with 4 - 20mA Sensor Drive 05701-A-0283
28
29
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. ie. At the sensor or at the Interface/relay Card.
LK3
Link Positions
LK1
LK12
LK9
LK6
27
S
Arrows Indicate Direction of
Loop Current Flow
+24V
4 - 20mA(-)
0V
0V
+24
4-20mA(-)
LK3 Fitted
(For Current Sink)
Sensors: 704 705
783 811
910 911
Digi Series
See Table for
Sensor Wiring
Screened
Cable
Cabinet
Protective
Earth
* The 24V supply for the transmitter may
be obtained from either the Relay/Field
Interface Card terminals 35 (+24V) and
36 (0V), or a separate field supply.
Relay/Field Interface Card
05701-A-0326
05701-A-0327
05701-A-0328
05701-A-0329
05701-A-0330