Hach-Lange SC 1000 - Manual (Page 148)

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A.5 Attach the external output module
The output module provides two outputs, 0–20 mA/4–20 mA, 500 Ohm.
1. Remove power and disconnect all cable connections to the module.
2. Place the External Output Module on the DIN rail to the right of the base module and
slide firmly against the base module (or other connected modules).
3. Make the appropriate connections as shown in Figure 79 and Table 52 .
4. Connect cables to the module and reconnect power from the instrument.
Figure 78 External relay module
Table 51 External relay module terminal assignments
Terminal Assignment Description
1 Normally opened contact 1/3 (NO)
Maximum switching voltage:
250 VAC;
125 VDC
Maximum switching current:
250 VAC, 5 A
125 VAC, 5 A
30 VDC, 5 A
Maximum switching power:
1500 VA
150 W
2 Normally closed contact 2/3 (NC)
3 Not switched (COM)
4 Not used
5 Normally opened contact 5/7 (NO)
6 Normally closed contact 6/7 (NC)
7 Not switched (COM)
8 Not used
9 Normally opened contact 9/10 (NO)
10 Not switched (COM)
11 Normally closed contact 11/10 (NC)
12 Not used
13 Normally opened contact 13/14 (NO)
14 Not switched (COM)
15 Normally closed contact 15/14 (NC)
16 Not used