Hach-Lange SC 60 - Manual (Page 23)

19
Installation
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
on page 20 . 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 Table 4:
and Figure 16 on page 20 .
Figure 15 Alarm and Relay Connections
NC NC NC COM COM COM NO
F1 F2
NO NO
RELAYC RELAYB RELAYA
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
RELAYC RELAYB RELAYA
J1
J2
J4
S1
NETWORK
INTERFACE
CARD
J3
J5
J6
U5
U9
J5 J5
J5 J6 J7
3 2 1
RELAYA RELAYA RELAYB RELAYB RELAYC RELAYC
Disconnect
Power
NC COM NO