Connecting The Sc Sensor To A Controller In A Hazardous Location - Hach sc100 User Manual

Installation
Figure 19 Hard-wiring the sensor
J1 J1
S1 S1
J2 J2
U5 U5
J4 J4
NETWORK NETWORK
INTERFACE INTERFACE
CARD CARD
From Probe
Terminal Number
1
2
3
4
5
6

3.5.2 Connecting the sc Sensor to a Controller in a Hazardous Location

3.5.2.1 Attaching a sc Sensor with a Quick-connect FItting in a Hazardous Location
24
J3 J3
J5 J5 J5 J5
U9 U9
J6
Table 5 Wiring the Sensor at Terminal Block J5
Terminal Designation
Data (+)
Data (–)
Service Request
+12 V dc
Circuit Common
Shield
DANGER
For Class 1, Division 2 Hazardous Location installations, refer to the Control
Drawing (Figure 2 on page
requirements.
DANGER
Explosion hazard. Do not connect or disconnect electrical components or circuits
to the equipment unless power has been switched off or the area is known to be
non-hazardous.
The sensor cable is supplied with a keyed quick-connect fitting for easy attachment to the
controller, see Figure 18. For hazardous locations, a connector safety lock must be
installed. Retain the connector cap to seal the connector opening in case the sensor must
1 1 1 1 + + + + + + + + DATA DATA DATA DATA DATA DATA DATA DATA
– DATA – DATA – DATA – DATA
2 2 2 2
3 3 3 3 SERVICE REQUEST SERVICE REQUEST SERVICE REQUEST SERVICE REQUEST
+ + + + + + + +
4 4 4 4 V V V V V V V V
5 5 5 5 GND GND GND GND
6 6 6 6
1 1 1 1 + + + + + + + + OUT 2 OUT 2 OUT 2 OUT 2 OUT 2 OUT 2 OUT 2 OUT 2
– OUT 2 – OUT 2 – OUT 2 – OUT 2
2 2 2 2
3 3 3 3 SHIELD/CHASSIS GND SHIELD/CHASSIS GND SHIELD/CHASSIS GND SHIELD/CHASSIS GND
+ + + + + + + +
4 4 4 4 OUT 1 OUT 1 OUT 1 OUT 1 OUT 1 OUT 1 OUT 1 OUT 1
PCB PCB PCB PCB PCB PCB PCB PCB
5 5 5 5 – OUT 1 – OUT 1 – OUT 1 – OUT 1
CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR
NC NC COM COM NO NO NC NC COM COM NO NO NC NC COM COM
RELAY 1 RELAY 1 RELAY 2 RELAY 2 RELAY 3 RELAY 3
DANGER - EXPLOSION HAZARD DANGER - EXPLOSION HAZARD DANGER - EXPLOSION HAZARD DANGER - EXPLOSION HAZARD
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE DO NOT DISCONNECT WHILE CIRCUIT IS LIVE DO NOT DISCONNECT WHILE CIRCUIT IS LIVE DO NOT DISCONNECT WHILE CIRCUIT IS LIVE FIELD WIRING FIELD WIRING FIELD WIRING FIELD WIRING FIELD WIRING FIELD WIRING FIELD WIRING FIELD WIRING
UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS. UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS. UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS. UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS.
INSULATION MUST INSULATION MUST INSULATION MUST INSULATION MUST INSULATION MUST INSULATION MUST INSULATION MUST INSULATION MUST
BE RATED TO BE RATED TO BE RATED TO BE RATED TO BE RATED TO BE RATED TO BE RATED TO BE RATED TO
DANGER - RISQUE D'EXPLOSION DANGER - RISQUE D'EXPLOSION DANGER - RISQUE D'EXPLOSION DANGER - RISQUE D'EXPLOSION
80° C MINIMUM 80° C MINIMUM 80° C MINIMUM 80° C MINIMUM 80° C MINIMUM 80° C MINIMUM 80° C MINIMUM 80° C MINIMUM
NE PAS DEBRANCHER TANT QUE LE EST SOUS NE PAS DEBRANCHER TANT QUE LE EST SOUS NE PAS DEBRANCHER TANT QUE LE EST SOUS NE PAS DEBRANCHER TANT QUE LE EST SOUS
TENSION, A MONIS QU'IL NE S'AGISSE D'UN TENSION, A MONIS QU'IL NE S'AGISSE D'UN TENSION, A MONIS QU'IL NE S'AGISSE D'UN TENSION, A MONIS QU'IL NE S'AGISSE D'UN
EMPLACEMENT NON-DANGEROUX EMPLACEMENT NON-DANGEROUX EMPLACEMENT NON-DANGEROUX EMPLACEMENT NON-DANGEROUX
Shield (grey wire in existing quick disconnect fitting)
10) for sensor and optional equipment connection
NO NO
Disconnect
Power
Wire Color
Blue
White
No Connection
Brown
Black