OHAUS CKW-Serie Installations- Und Bedienungsanweisungen Seite 6

CKW Relay Option Kit
Making External Connections to the Relays (Cont.)
• Each relay output has two terminals, connect each
wire pair to be switched to each set of terminals. See
Figure 3, for a relay contact diagram.
• For DC relay boards, make sure the polarity is correct.
• The DC Relay PCB can only be used with DC circuits.
• The AC Relay PCB can only be used with AC circuits.
• After making the proper connections, tighten the
external nut of the liquid-tight connector securely
around the cable.
• Install the Relay Terminal Cover as shown in
Figure 4 using the two screws supplied.
• The relay connections provide a switch closure only, AC or DC power must be
supplied externally.
• For reference, Appendix A shows typical examples of wiring to the relays.
CAUTION: Do not operate the Relay Option without the terminal cover
in place.
IMPORTANT: Review the I/O menu before using the relay option board
to control external devices.
Figure 4. Relay Output Board With Cover in Place.
Figure 3. Relay Output
Board Contact Diagram.
EN-5