Setup Information - Johnson Controls CKM-MR51E Hardware Installation Manual

CKM-MR51E
24-10707-58 Rev. E
Relay Circuit Wiring
Two Form-C contact relays are provided for controlling door lock
mechanisms or alarm signaling. The relay contacts are rated at 5 A at
30 VAC/DC, dry contact configuration. Each relay has a Common pole
(C), a Normally Open pole (NO) and a Normally Closed pole (NC).
When you control the delivery of power to the door strike, the Normally
Open and Common poles are used. When you momentarily remove
power to unlock the door, as with a mag lock, the Normally Closed and
Common poles are used. Check with local building codes for proper
egress door installation.
Door lock mechanisms can generate feedback to the relay circuit that can
cause damage and premature failure of the relay. For this reason, we
recommend that either a diode or MOV (metal oxide varistor) be used to
protect the relay. Wire should be of sufficient gauge to avoid voltage loss.
I : It is possible for the CKM-MR51E to provide power for a 12 VDC
MPORTANT
door strike providing the maximum current is not exceeded; see Specifications.
S I
ETUP NFORMATION
Use the Jumpers to set up Power over Ethernet (PoE) or external power source.
Use DIP Switches
DIP switch is changed for new address mode.
Figure 8: CKM-MR51E Relay Circuit Wiring
to set up the addressing mode. Press S2 to reset board after
Hardware Installation Manual
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