Connections - HACH LANGE si628 C Manuel D'utilisateur

3. Installation
When making any wiring connections to the instrument, any warnings and notes found throughout the
manual must be adhered to. For more safety information see "Safety information" on page 5.
DANGER
Always disconnect power to the instrument when making any electrical connections.

3.2.2. Connections

System functions
DANGER
High-voltage wiring for the instrument is protected by a protective casing. The protective casing
must remain in place unless a qualified installation technician is installing wiring for power.
si628 C_HACH LANGE_Ed. 0510.indd ANG:11 si628 C_HACH LANGE_Ed. 0510.indd ANG:11
1 Ground connection, see Important
notes (page 12).
2, 3 Power supply 230 or 24 VAC ± 10%.
(115 VAC under demand).
4, 5 Alarm relay contacts.
6, 7 Limit relay contacts.
8, 9 Current output 4-20 mA (EC).
10 to 13 Input for 2-pole cell.
14 Cell cable shielding.
15, 16 Input for temperature probe.
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