Installation, 2 connecting the analog outputs, Disconnect power – Hach-Lange SC 100 User Manual
Page 22: Alarms and relays 18, Figure 15 alarm and relay connections, Table 4 output connections at terminal block j6
Alarms and Relays
18
Installation
Figure 15
Alarm and Relay Connections
3.4.2
Connecting the Analog Outputs
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.
Two isolated analog outputs (1 and 2) are provided, see
Figure 16
. Each output can be set to 0–20
or 4–20 mA, and can be assigned to represent the measured parameter or secondary
measurement such as temperature. Make connections with twisted-pair shielded wire and connect
the shield at the controlled component end or at the control loop end.
Do not connect the shield
at both ends of the cable. Use of non-shielded cable may result in radio frequency emission or
susceptibility levels higher than allowed. Maximum loop resistance is 500 Ohm. Refer to the
sensor manual for output software setup.
Make wiring connections at the analyzer end as shown in
Figure 16
.
NC
NC
NC
COM
COM
COM
NO
F1
F2
NO
NO
RELAY C
RELAY B
RELAY A
J1
J2
J4
S1
NETWORK
INTERFACE
CARD
J3
J5
J6
U5
U9
J5
J5
NC
NC
NC
COM
COM
COM
NO
F1
F2
NO
NO
RELAY C
RELAY B
RELAY A
J1
J2
J4
S1
NETWORK
INTERFACE
CARD
J3
J5
J6
U5
U9
J5
J5
J5
J6
J7
3
2
1
RELAY A
RELAY B
RELAY C
Disconnect
Power
NC
COM
NO
Table 4 Output Connections at Terminal Block J6
Recorder Wires
Circuit Board Position
Output 2 +
1
Output 2 –
2
Shield
3
Output 1 +
4
Output 1 –
5