DDRC1220FR-GL
To reduce the risk of re or electric shock, do not expose this device to rain or moisture. Installation, programming and maintenance must be
carried out by qualied personnel. All local wiring and electrical regulations must be followed when installing device.
Overview
• Single phase supply – One phase at 0.25 A
• 12 x feed-through outputs – Rated at 20 A
• Multiple wiring schemes supported – Controls Single Phase
and Neutral or Three Phase and Neutral (Star) wiring
• Powerful internal PLC – Custom scripts can provide process
control based on conditional logic
• DIN-rail mounting – 12 units wide
• Hardware override – Service override switch accessible from
front panel
12 x 20 A Relay Controller
Read Instructions – We recommend that you read this guide prior to
commencement of installation.
Manual Override Switches –These switches do not provide
permanent isolation. Isolate at the supply before performing work on
load circuits.
Special Programming – Once powered and terminated correctly
this device only operates in basic mode. Advanced functions are
commissioned via the Envision software. If commissioning services
are required, contact your local distributor.
Power Sources – This device should only be operated from the type
of supply specied on the front cover. This device must be earthed.
Feed-through output circuits –The load on a circuit should not
exceed the specied capacity of 20 A. Loads should be calculated to
ensure that the overall maximum capacity of 180 A is not exceeded.
This device should be fed via HRC fuse or MCB. Output circuits
are suitable for Single Phase or Three Phase Star (with Neutral)
only. Suitable for some Delta wiring installations, contact Distributor
Support for more information.
Mounting Location – Install in a dry, well-ventilated location. The
device may emit some mechanical noise during operation. Take this
into account when deciding the mounting location.
Data Cable – Use screened, stranded RS485 data cable with three
twisted pairs. Segregate from mains cables by at least 300 mm.
Connect devices in a ‘daisy chain’ conguration. A data cable that is
connected to an energized device is live. Do not cut or terminate live
data cables.
Installation – Installation must be done in accordance with local
wiring code (or wiring rules). Network topology for installation is Daisy
Chain. Installation of the home and building automation and control
system shall comply with HD60364-4-41.
Hardware Dimensions
Installation Steps
1. Mount the device on a DIN-rail inside an approved enclosure, in
compliance with local electrical codes.
2. Calculate loads to ensure no channels are overloaded, then
connect loads to the output channels. The maximum loads are:
Per Channel: 20 A at 240 VAC (resistive).
Max inrush 500 A (200 uS)
Total Device Load: 180 A (resistive)
3. Connect supply and load cables to each channel. Supported
supplies and wiring schemes are:
Single phase 100-240 VAC, 3 phase 400/230 VAC star, and
100-120/208-240 VAC delta 50/60 Hz supply not exceeding
240 VAC phase-to-ground and across load supply terminals.
All live feeds must be protected with fuses / circuit breakers
rated 20 A or lower. Relay open contact rated voltage must not
exceed 240 VAC. Supply over-voltage (surge) must not exceed
4 kV, as per IEC category III classication.
4. Connect a single phase 0.25 A feed to the control circuit supply
terminals. This device must be earthed.
5. Connect data cables to the device as per the diagrams on the
next page.
6. If using the Auxiliary input, connect a dry contact device
in between the AUX and GND terminals. Keep cable runs
between the device and the dry contacts under ten meters and
use shielded twisted pair where possible. The function of the
Auxiliary input is congured during commissioning.
215 mm (8.5 in)
