Controlli DG551C User manual

1st Issue 11/06 1DMP054E
ISO9000
CONTROLLI
16010 SANT’OLCESE Genova –Italy
Tel. [phone]
Fax [phone]
E-mail [email protected] Web www.controlli.org
User Guide
DG551C
EUROPEAN COMMUNITY DIRECTIVES
This equipment meets all requirements of European Community Directives for Low Voltage
(72/23/EEC), General Safety (92/59/EEC), and Electromagnetic Compatibility (89/336/EEC).

1st Issue 11/06 2DMP054E
INTRODUCTION ............................................................................................................................................ 4
START-UP........................................................................................................................................................ 4
INSTALLATION ............................................................................................................................................. 5
PRODUCT DESCRIPTION .................................................................................................................................. 5
INSPECTION ..................................................................................................................................................... 5
REQUIREMENTS............................................................................................................................................... 5
PRECAUTIONS ................................................................................................................................................. 6
General Precautions................................................................................................................................... 6
Static Precautions....................................................................................................................................... 6
European Community Directives ............................................................................................................... 6
Communication Network Wiring Precautions............................................................................................ 6
Digital Output Precautions ........................................................................................................................ 6
Power Supply Wiring Precautions ............................................................................................................. 6
Location...................................................................................................................................................... 6
WALL OR DIN RAIL MOUNTING ...................................................................................................................... 7
Mounting Methods...................................................................................................................................... 7
LCD PANEL MOUNTING USING DG510 KIT .................................................................................................... 8
COMMUNICATION ONLY FOR NETWORKS WITH MORE THAN ONE CONTROLLER............................................... 8
ADDRESSING ................................................................................................................................................... 9
WIRING ........................................................................................................................................................... 9
DG550 Terminal Connections.................................................................................................................. 10
Wiring Routing Rules ............................................................................................................................... 10
NCP NETWORK WIRING ............................................................................................................................... 11
COLLEGAMENTO INGRESSI UNIVERSALI (UI)................................................................................................. 11
Digital UIs................................................................................................................................................ 13
RELAY OUTPUT WIRING ............................................................................................................................... 13
ANALOGUE OUTPUT (AO) WIRING ............................................................................................................... 13
POWER SUPPLY WIRING................................................................................................................................ 14
24Vac Power Wiring ................................................................................................................................ 14
PANEL MOUNT CONTROLLER/LCD WIRING (KIT DG510) ............................................................................ 15
INSTALLATION CHECKLIST............................................................................................................................ 15
DG551C APPLICATIONS ............................................................................................................................ 16
LCD DISPLAY............................................................................................................................................... 22
LCD DISPLAY............................................................................................................................................... 23
LCD DISPLAY............................................................................................................................................... 24
LCD DISPLAY............................................................................................................................................... 25
MENU OPTIONS DESCRIPTION .............................................................................................................. 25
Sat.+ Amb. 1-5......................................................................................................................................... 26
Amb.+ PreR. 6-7...................................................................................................................................... 27
Heat Loop................................................................................................................................................. 29
Cool Loop................................................................................................................................................. 29
Preheat. Loop........................................................................................................................................... 29
Fan Coil ................................................................................................................................................... 30
Heating Loop............................................................................................................................................ 31
Cooling Loop............................................................................................................................................ 32
Manual Override ...................................................................................................................................... 33

1st Issue 11/06 3DMP054E
Manual Shutdown..................................................................................................................................... 33
Holidays ................................................................................................................................................... 33

1st Issue 11/06 4DMP054E
Introduction
The DG551C controller
•allows the complete automatic control and management of the air-conditioning plant type
chosen among the various applications (see, further for a list) configured and existing in the
controller. In order to enable the required application, it is sufficient to carry out the controller
electrical connections according to the relevant scheme and to follow the instructions in the
present manual.
•once the controller has been installed and connected, it is started up by simply switching on
power supply. No configuration intervention on the part of the user is needed. The only
necessary operations, to be carried out from the display, are to set time and time schedules. In
any case, it will be possible, using the display, to supervise and correct the origin values of the
variables.
Consider that:
•no particular instrument, even the PC, is required to install and use DG550.
•all operations are carried out through the display in a simple and user-friendly way.
Start-up
Once the application type, from 1 to 9, has been chosen, and the relevant connections have been
carried out, stick the label (supplied in the package) which identifies the scheme number. This has
the purpose to make it evident for future interventions on the plant.
-Verify that the isolating strap, protecting the battery, has been removed, as described in the
paragraph LCD panel mounting at page 8
-Switch on power supply.
-After some moment, on the display the date and time appear. Press Esc.
-Using the navigation button, select the menu Set Clock, set the current date and time and
confirm using the Enter button.
-Press Esc. to go back to the start menu and verify the correct date and time are set.
At this time, if the pre-set parameters related to time programming (i.e. permanent operation) and to
the set value of the variables satisfy the plant requirements, the controller becomes immediately
operating.
In the frequent case a customised time and daily schedule is required, scroll the menu up to the
time to be modified (primary air or fan coil) and enter the required data using the procedure
described below.
Ex. 1 Programme: Monday to Friday, on 08, off 17. Saturday and Sunday off
On Off On Off
Monday, Tuesday,
Wednesday,
Thursday, Friday
08:00 17:00 17:00 17:00
Saturday, Sunday 00:00 00:00 00:00 00:00

1st Issue 11/06 5DMP054E
Ex. 2 Programme: Monday to Friday on 08, off 12, on 13,30 on 17, Saturday on 08, off 13, Sunday
off
On Off On Off
Monday, Tuesday,
Wednesday,
Thursday, Friday
08:00 12:00 13:30 17:00
Saturday 08:00 13:00 13.00 13.00
Sunday 00:00 00:00 00:00 00:00
In order to edit the set values of the required variables or, simply to monitor values of the variables
and sets, refer to the Menu description below.
Consider that the analogue inputs, which are not connected, are displayed as ------, the digital ones
are marked by Off.
Installation
Product Description
The DG550 Controller has a moulded polycarbonate base, protection class IP 40, and a LCD
screen for displaying and entering parameters. Its compact size allows easy inclusion in an
electrical enclosure.
Two Versions of the DG550 Controller are available:
•the wall mountable version (with or without DIN rail)
•the panel mountable version, using kit DG510
Inspection
Inspect carton for damage. If damaged, notify carrier immediately. Inspect controller for damage.
Return damaged products.
Requirements
(items not provided)
•Tools:
•Drill and bits for panel mounting screws.
•Digital Volt-Ohm-Meter (DVM.
•EN 60742 power transformer supplying a nominal 24Vac (20.4 to 30Vac) with a minimum rating
of 10VA, 50/60Hz. In case of more than one controller use a transformer supplying 10 VA x
number of controllers.
•Three No. 10 self-starting screws for wall mounting or 35mm DIN rail for mounting.

1st Issue 11/06 6DMP054E
Precautions
WARNINGS –ELECTRICAL SHOCK HAZARD!
DISCONNECT POWER BEFORE INSTALLING OR REMOVING THE COVER.
General Precautions
•Follow Static precautions when installing this equipment.
•Use copper conductors that are suitable for 75°C.
•Make all connections according to electrical wiring diagram, national and local electrical codes.
Static Precautions
Static charges damage electronic components. The microprocessor and associated circuitry are
extremely sensitive to static discharge. Use the following precautions when installing, servicing, or
operating the system:
•Work in a static-free area.
•Discharge static electricity by touching a known, securely grounded object.
•Use a wrist strap connected to earth ground when handling the controller’s printed circuit
board.
European Community Directives
This equipment meets all requirements of European Community Directives for Low Voltage
(72/23/EEC), General Safety (92/59/EEC), and Electromagnetic Compatibility (89/336/EEC).
Communication Network Wiring Precautions
•Use screened cables.
•If the cable is installed in areas of high RFI/EMI, the cable must be in conduit.
•Do not mix network wiring with other types of wiring (power, DO, AO, DI or UI).
Digital Output Precautions
•Do not mix DO wiring with other types of wiring (AO, DI or UI).
•Output terminals accept 1.5mm² wire. The selected wire gauge must be consistent with load
current.
Power Supply Wiring Precautions
•This product contains a non-isolated half-wave rectifier power supply and must not be powered
by transformers used to power other devices containing non-isolated full-wave rectifier power
supplies.
•Do not mix power wiring with communication networks, AO, UI or DI wiring.
•Use an EN 60742 power transformer supplying a nominal 24Vac (20.4 to 30Vac) with a
minimum rating of 10VA at 50/60Hz (controller only). The supply to transformer must have a
breaker or disconnect.
•The transformer frame must be grounded.
Location
DG550 controllers are suitable for indoor use only. When selecting a mounting location, make
certain the following conditions are met:
•Do not install where excessive moisture, corrosive fumes, vibration or explosive vapours are
present.
•Do not install near large contactors, electrical machinery or welding equipment.
•Allow 150mm clearance from contactors, switches and associated cabling.
Locate where ambient temperatures do not exceed 50°C or fall below 0°C and relative humidity
does not exceed 95% or fall below 5%, non-condensing.

1st Issue 11/06 7DMP054E
Wall or DIN rail mounting
1. Select mounting location. Allow minimum 50mm clearance around controller.
2. Do the following to mount controller on a panel without DIN rail:
a. Loosen two screws securing terminal cover and remove cover.
b. Lift wall mounting bracket clip (located on top back of controller).
c. Using a No. 10 self-starting screw, install top screw.
d. Level controller.
e. Using two No. 10 self-starting screws, install bottom screws.
f. Re-install the terminal cover. (May be left off until wiring is completed.)
3. Do the following to mount controller on a DIN rail:
a. While pulling down on DIN rail locking bracket, snap controller base on a 35mm DIN
mounting rail.
b. Release DIN rail locking bracket.
Mounting Methods
Panel mounting DIN rail mounting

1st Issue 11/06 8DMP054E
LCD Panel Mounting using DG510 Kit
Communication only for networks with more than one controller
DG550 can operate as a stand-alone device or on larger installations connected to a NCP
communication network.

1st Issue 11/06 9DMP054E
Addressing
The default address for a standalone DG550 Controller is “Subnet 1 Node 2”, i.e. switch 2 set to
ON.
Each DG550 Controller has a unique address for communicating with a PC or modem.
a) Ensure the controller is not powered up.
b) Set switches 1 to 7 to the appropriate ON/OFF position to enable the binary address.
c) Power up the controller.
Example: to configure address 37: set switches 1, 3 and 6 to ON and the other switches to OFF
position.
Wiring
The following electrical connections can be made to DG550 controllers:
•NCP connection to a MicroNet NCP Interface (MN50-MI) and other NCP type DG50XX
controllers
•I/O connections, including:
•Ten configurable Universal Inputs (UIs)
•Two digital inputs
•Six digital outputs (Line Relay)
•Four analogue outputs (0 to 10V)
•24 Vac nominal EN 60742 power source and earth ground power connection.

1st Issue 11/06 10 DMP054E
DG550 Terminal Connections
Wiring Routing Rules
The following table shows cable types that can be routed together:
a Comms must always be screened
b Screen UI
c Screen DI
d Screen AO