Alarm Connections - Hach Lange CL17 User Manual

Installation
1 Voltage selection switch (SW1). Factory set at 115V.
2 GND
3 Neutral / White Ø2
3.8.4

Alarm connections

22
Figure 13 Voltage selector switch and fuse replacement
CAUTION
Fire hazard. Current to the relay contacts must be limited to 5 amps resistive. A
method to remove power from the relays locally must be available in case of an
emergency or for servicing the product. Power removal can be accomplished with
an external switch and a 5-amp fuse or with a switched 5-amp circuit breaker.
The analyzer contains two alarm relays designed for use with either high voltage (greater
than 30V-RMS and 42.2V-PEAK or 60 VDC) or low voltage (less than 30V-RMS and
42.2V-PEAK, or less than 60 VDC), but not a combination of both high and low voltage.
Refer to 3.8.5, Figure 11, and
information.
The Normally Open and Common relay contacts will be connected when an alarm
condition is active.
The relay connector accepts 18-12 AWG wire. Wire gauge should be determined by load
application. Wire gauge less than 18 AWG is not recommended.
1. Make sure no power is supplied to the instrument.
2. Strip the insulation on each wire back ¼-inch. Refer to
3. Remove the connector from the instrument if desired.
4. Insert the wire ends into the connector until the insulation seats against
the connector. Refer to
plates.)
5. Replace the connector if necessary and supply power to the instrument.
4 Hot / Black Ø1
5 Fuses (F1, F2) (T, 2.5A, 250V)
Figure 15 along with the instructions below for connection
Figure 14. (Do not seat the insulation under the terminal pinch
Figure 14.