Mercury Security © 2014
M5-2K
DOC 10107-0048
REV 1.02
Page 7
*
Grounded and foreign voltage states are not UL 294 required and therefore not verified by UL.
The input circuit wiring configurations shown are supported, but may not be typical:
M5-2K Input Wiring
– Supervised and Non-supervised
Door position monitor and REX inputs must be wired to the M5-2K when using F/2F readers. EOL
resistors are typically two 1K ohm resistors as shown below. The EOL resistors should be installed
as close to the switch as possible.
M5-2K Input Terminal Block Definitions:
TB1: Inputs 1 thru 5
TB2: Inputs 6 thru 10
TB1-1
DI 1
TB2-1
DI 6
TB1-2
DI 1 return
TB2-2
DI 6 return
TB1-3
DI 2
TB2-3
DI 7
TB1-4
DI 2 return
TB2-4
DI 7 return
TB1-5
DI 3
TB2-5
DI 8
TB1-6
DI 3 return
TB2-6
DI 8 return
TB1-7
DI 4
TB2-7
DI 9
TB1-8
DI 4 return
TB2-8
DI 9 return
TB1-9
DI 5
TB2-9
DI 10
TB1-10
DI 5 return
TB2-10
DI 10 return
10. Door Strike Wiring using an External Relay:
Instead of using the on-board relay to control the door strike, an external relay may be used. This
external relay is controlled by the reader DOx output.
If the LED in the reader is driven by the reader port DOx signal, a blocking diode must be added to the
circuit. This blocking diode should be a Schottky barrier rectifier, type 1N5817 or equivalent (20 volt @ 1
A).
Important note:
The external relay’s coil current must be restricted to 40 mA. The coil resistance of a 12 volt relay
must be 300 ohms or greater.
1K,1%
1K,1%
1K,1%
1K,1%
Standard Supervised Circuit,
Normally Open Contact
Normally Closed Contact
Standard Supervised Circuit,
Normally Closed Contact
Unsupervised Circuit,
Normally Open Contact
Unsupervised Circuit,
