Hach Sigma 950 Manual Básico Del Usuario página 17

• Alarm Relay port—Connect to external devices, such as horns or lights. Use an alarm relay cable
assembly (6-pin connector on one end and tinned wire leads on the other end) to make the
connection. Refer to
Pin Wire color
A Red
B Green
Figure 6 RJ11-style modular connector adaptor with cover removed
1 Modem cable assembly (2862)
2 Green wire
Pin Description
A Output A +
B Output A –
Pin Description
A Relay #1 normally open
B Relay #1 common
C Relay #1 normally closed
Pin Description
A Relay #3 normally open
B Relay #3 common
C Relay #3 normally closed
Table 12 and Table 13.
Table 10 Modem port wiring
Description
Tip
Ring
Table 11 4–20 mA port wiring
Wire color
Yellow
Black
Table 12 Alarm Relay 1 and 2 wiring
Wire color
Green
Black
White
Table 13 Alarm Relay 3 and 4 wiring
Wire color
Green
Black
White
Pin Wire color
C —
D —
3 Red wire
4 RJ11 style adaptor (3188)
Pin Description
C Output B +
D Output B –
Pin Description
D Relay #2 normally open
E Relay #2 common
F Relay #2 normally closed
Pin Description
D Relay #4 normally open
E Relay #4 common
F Relay #4 normally closed
Description
12 VDC
12 VDC reference
Wire color
Red
Green
Wire color
Green
Black
White
Wire color
Green
Black
White
English 17