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).

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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

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Manual Shutdown..................................................................................................................................... 33
Holidays ................................................................................................................................................... 33

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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

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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.

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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.

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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

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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.

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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.

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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

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NCP Network Wiring
Controllers may be networked to either a 'main LAN' by an MN50-MI-NCP or to a 'sub-LAN' using a
MicroNet Touch Screen.
The recommended cable for NCP networks is Belden 9502 dual twisted-pair screened cable with
full opto-isolation in areas of high electrical noise.
Connect the network to the controller, as shown in the following diagram. Observing correct
polarity, connect one pair of the dual twisted pair to the LAN and connect both wires of the other
pair to one to an insulated (LAN REF) reference terminal(s).
Note: Connect the controller with other NCP devices in a device-to-device fashion.
Do not use wiring trees or stubs.
NCP Wiring when Touch Screen is not mounted on Controller
Collegamento ingressi universali (UI)
Configurazione UI
Ciascun UI deve essere configurato sia come ingresso in tensione (0-10 Vcc),
Resistivo/Temperatura (0-10KOhm) o come ingresso digitale. Ciò deve corrispondere all’utilizzo
degli ingressi nelle applicazioni del regolatore. La configurazione viene effettuata posizionando il
blocco corto (ponticello) su gli appositi pin:

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I/O Wiring
I/O connections include 10 configurable universal inputs (UIs), 2 digital inputs (DI), 6 digital outputs
(Line relay), and 4 analogue outputs (AO). The DOs are line relays for switching up to 230Vac, 5A
loads. Four analogue outputs provide 0 to 10V.
WARNINGS –ELECTRICAL SHOCK HAZARD!
DISCONNECT POWER FROM BOTH THE CONTROLLER AND DIGITAL
OUTPUTS BEFORE MAKING TERMINATIONS OR CHANGING
CONFIGURATION INPUT JUMPERS.
Voltage UIs
Note: An externally powered 0 to 10Vdc sensor is required. The input impedance of a voltage input
is 430kO.
1.Connect one wire with positive signal from a 0 to 10-Vdc device to the desired input terminal (8, 9,
10, 11, 12, 13, 14, 15, 16, or 17).
2.Connect one wire with negative signal to one UI common (COM ) terminal (31, 32, 33, 34, 35, 36,
37, 38, 39 or 40).
Make sure that the jumper is in Voltage position.
Resistive (Temperature) UIs
1.Connect one wire from the resistive device to desired input terminal (8, 9, 10, 11, 12, 13, 14, 15,
16 or 17). Polarity is not important.
2.Connect other wire to UI common (COM ) terminal (31, 32, 33, 34, 35, 36, 37, 38, 39 or 40).
3.Make certain input configuration jumper is in Resistive position.

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Digital UIs
Note: Only dry (voltage free) contacts can be monitored. Maximum count frequency is once every
two seconds.
1.Connect one wire from field contact to desired input terminal (8, 9, 10, 11, 12, 13, 14, 15, 16 or
17). Polarity is not important.
2.Connect other wire to one UI common (COM) terminal (31, 32, 33, 34, 35, 36, 37, 38, 39 or 40).
3.Make certain input configuration jumper is in Digital position.
Relay Output Wiring
The Relay Outputs are normally open voltage-free line relays for 230Vac switching, 5A loads. Each
load must be externally powered.
Note: The selected wire gauge must be consistent with load current rating.
1.Review the Precautions section.
2.Connect one wire from load to be switched to desired input terminal (47, 49, 51, 53, 55 or 57).
3.Connect other side of load to output terminal (48, 50, 52, 54, 56 or 58).
Analogue Output (AO) Wiring
AO1 to AO4 supply from 0 to 10Vdc to modulate a voltage controlled device.
•Minimum input impedance for a device or actuator operated by an AO is 10kO.
•The maximum current that a 0-10Vdc output can source is 1mA.
•Review the Precautions section. Connect positive signal wire to desired output terminal (3, 4, 5
or 6).
Connect negative signal wire to the corresponding AO COM terminal (26, 27, 28 or 29).

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Power Supply Wiring
24Vac Power Wiring
1.Ensure that the controller GND terminal is connected to Earth before connecting the power
wiring to the controller.
2.Connect power ground wiring to terminal 24 (GND).
3.Connect power 24Vac wiring to terminal 1 (24V~).
Notes:
1.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. If multiple devices are powered from the same transformer, verify that the
transformer is properly sized to power all equipment simultaneously and all devices contain the
same type of rectifier power supplies or internal isolation. Also verify that correct polarity has
been maintained between all connected devices
2.Install wiring according to job wiring diagrams and local electrical codes.
The wire gauge used must be consistent with load current rating.

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Panel mount Controller/LCD Wiring (Kit DG510)
It consists of a separate LCD and Base Unit. The two units should be wired together in the following
manner.
Installation Checklist
1. If controller is part of a NCP network, verify network wiring between controller and other
devices is effected according to job wiring diagram and national and local electrical codes.
2. Verify 24Vac power is provided from a power transformer conforming to EN 60742 and wiring is
carried out according to job wiring diagrams and with national and local electrical codes.
3. Verify input jumpers are in correct position.
4. Verify outputs are wired according to job wiring diagram and with national and local electrical
codes.
5. Make certain current requirements of the controlled device do not exceed rating of controller
digital outputs.

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DG551C APPLICATIONS
T1
U2
T2
B1 B2
Damper
U1
Anti
frost
Pressure
switch
1: Primary air. 2 coils (heating, cooling), humidification. Compensated or set point
adjustment of the dew point. On/Off humidifier, anti-frost thermostat.
The inputs marked by ° are optional. The stroke end, if not used, must be short-circuited, in
order to have a “On” value; the others must be left free.

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T1
U2
T2
B1
B2
Damper
U1
Anti
frost
T4
P1
V1
2: 1+ 2-pipe fan-coil water production. Compensated or set point control of hot water in winter;
compensated or set point control of cold water through external summer/winter switch.
The inputs marked by ° are optional. The stroke end, if not used, must be short-circuited, in
order to have a “On” value; the others must be left free.
FC1
Pressure
switch

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T1
U2
T2
B1 B2
Damper U1
Anti
frost
T4 T5
P2P1
V2V1
3: 1+ 4-pipe fan-coil water production. Compensated or set point control of hot
water in winter; compensated or set point control of cold water.
The inputs marked by ° are optional. The stroke end, if not used, must be short-
circuited, in order to have a “On” value; the others must be left free.
FC1 FC2
Pressure
switch

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T1
U2
T2
B1 B2
Damper U1
Anti
frost
4: Primary air. 3 coils (heating,cooling, post-heating) humidification. Compensated or set
point control of dew point and supply temperature. On/Off humidifier, anti-frost
thermostat.
The inputs marked by ° are optional. The stroke end, if not used, must be short-circuited,
in order to have a “On” value; the others must be left free.
Pressure
switch
B3 T3

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T
1
U2
T2
B1 B2
Damper U1
Anti
frost
Pressure
switch
B3 T3
T4
P1
V1
FC1
5: 4 + 2-pipe fan-coil water production. Compensated or set point control of hot
water in winter; compensated or set point control of cold water through external
summer/winter switch.
The inputs marked by ° are optional. The stroke end, if not used, must be short-
circuited, in order to have a “On” value; the others must be left free.
19