D1551_D1553 installation manual 27042022 V2
Overview
The Dycon D1551 and D1551 are 1A and 3A switched mode power supplies with an opto-relay output for
signalling the status of the unit with PCB-mounted, LED status indicators. Both units provide a nominal 12V
when powered from a 230V AC supply with battery backup.
The power supplies have the following features:
-
ON/OFF power switching control input with pull-up, compatible with voltage-free contacts
-
Jumper for selecting normally OPEN or normally CLOSED for switched output operation
-
ON (OK) LED display indicating normal operation and ON/OFF switching status
-
Battery LED indicating standby operation and ON/OFF output switched status
-
Fault LED and separate fault opto-relay output for comprehensive fault monitoring
-
Battery connection monitoring
-
Battery deep discharge protection
-
Inductive and capacitive load switching surge protection and snubbing
-
Electronic overload protection with automatic reset
-
Highly efficient power conversion
–
better than 84% at full load
-
Low voltage drop when in standby mode
The ON/OFF switched output
The ON/OFF switched output is designed for highly inductive loads such as access control door
strikes and locks and is protected from high voltage back-EMF spikes.
Battery types
All standard VRLA (lead acid) batteries are supported. The standard battery connector for 2.1Ah &
7/8Ah batteries is a FASTON 4.75. For 17Ah & 24Ah batteries, please specify M5 connectors when
ordering
Connection layout for D1551
Version No:5
Material: PCB
Date: 25/03/2021
Projection:
General Tolerances:
+-0.5mm
Description: D1551
Scale
1:1.5mm
LED's
Mains Connection
Live
Earth
Neutral
BAT
PROG
INV
PSU FLT
0V
ON/OFF
-/+ 12V
M3 x 6 mm panhead
recommended with 10
mm high
hex stand off
