Hach sc1000 User Manual

30
Installation
Table 3 Relay card (YAB022, normally closed) terminal assignments
Terminal Designation Relay 1–4
1
Relay 1 (normally closed contacts)
Maximum switching voltage:
250 VAC;
125 VDC
Maximum switching current:
250 VAC, 5A
125 VAC, 5A
30 VDC, 5A
Maximum switching power:
1500 VA
150 W
2
3
Relay 2 (normally closed contacts)
4
5
Relay 3 (normally closed contacts)
6
7
Relay 4 (normally closed contacts)
8
Figure 21 Relay card (YAB076, change over)
1 Conductor (Pull to remove from the board, when wiring
outside devices to terminal connectors)
4 Relay 6
2 Relay 1 5 Relay 12
3 Relay 7 6 Terminal Block – Refer to Table 4 for terminal
assignments

Hach sc1000 Specifications

General

Operating Temperature	-20 to 60 °C (-4 to 140 °F)
Inputs	Up to 2 digital or analog sensors
Outputs	2 analog, 2 relay
Communication	Modbus
Power Supply	100-240 VAC
Enclosure Rating	IP66, NEMA 4X