Alarm Relays Connection - Hach 900 MAX Instrument Manual

Section 6

6.4.1 Alarm Relays Connection

Pin
A
B
C
D
E
Figure 26 Relay Pin Connections
Connector
Page 90
Alarm Relays
Table 17 Relay Connector (J17)
Signal Description
+12 V dc
Relay #1
Relay #2
Relay #3
Relay #4
Table 18 Relays
J2
J3
J4
J5
Relay Junction Box
Required relay box is an alarm relay box assembly with a 10-ft long cable with
a 6-pin connector on one end and a relay box on the other end
1. Choose Normally Closed (NC) or Normally Open (NO) connections.
2. Connect one wire to the common (COM) and the other to the connector
with the preferred signal.
Wire Color
Red
Yellow
Black
Red
Green
Relay
1
2
3
4
(Figure 27).
8990cm.fm