M Series Installation Guide
revision 7 —
149
AC Door Strike Wiring using External Relay
41.2.4
Door Strike Wiring Using the Internal Relays
The LNL-1340-M2K board has eight (8) Form-C contact relays for controlling door strikes or other devices.
Relay contact rating: 2 A @ 30 VAC/DC maximum.
Note:
Excessive load switching causes contact wear and premature failure. Inductive load (strike)
switching causes EMI (electromagnetic interference) which may interfere with normal
operation of other equipment. To minimize premature contact failure and to increase system
reliability, a contact protection circuit must be used. Locate the protection circuit as close to the
AC Door Strike Wiring using External Relay Callouts
Callout
Description
1
AC strike
2
AC transformer
3
Fuse
4
External relay
5
TB1 on LNL-1340-M2K
6
Terminal 1: +12 VDC connection for LNL-1340-M2K
7
Terminal 4: Reader LED connection
8
Suppression diode
9
To reader’s green LED input
10
Blocking diode (1N5817 or equivalent)
11
Suppression MOV
1
4
DI
DOx
VO
GND
1
4
1
2
3
4
5
7
8
10
6
11
9
Содержание LNL-3300-M5
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