2623A OKT 99 1.2.4
CORRIGO C40-LON
INSTRUCTION
Corrigo C40-LON is a controller primarily intended
for controlling air handling units. It can easily be
adapted to suit different types of units.
Corrigo C40-LON has built-in capability for LON
communication. See separate LON interface manual.
Corrigo C40-LON has six 0...10 V DC control outputs,
three in sequence for controlling for example heating /
heat exchanger / cooling and two for speed control of
supply air fan and exhaust air fan and one for humidity
control. It has a number of functions and possibilities,
such as DX-cooling in one or two steps, outdoor
temperature compensation, fire damper exercise, control
and monitoring of fans and circulation pump, free
cooling, heat-exhanger efficiency calculation etc.
Corrigo C40-LON can also receive and handle a number
of alarms such as fan and filter alarm, smoke alarm,
chiller alarm, heat-exchanger alarm and has a free relay
output for total alarm. Corrigo C40-LON has a year-base
real-time clock, week-scheduler , holiday calendar,
holiday periods and automatic normal time/daylight
saving time change-over.
Installation
Mount the unit on a DIN rail in a cabinet or separate
enclosure.
For mounting in the cabinet front, use mounting kit FMC.
Degree of protection
IP20
Ambient temperature
0...50°C
Wiring
Supply voltage
Terminals 42 and 43: 24 V AC, ±15%, 50/60 Hz.
Fan speed control, supply/exhaust air fans AI1, AI2
Connect AI1 and AI2 to pressure transmitters measuring
the pressure over each fan. Use transmitters with a
0...10V DC output signal. The pressure range is
adjustable.
N.B.
Since these signals control vital functions they must
be connected for the unit to work as intended.
Analogue inputs AI1...AI8
N.B.
All AI-inputs must refer to the signal neutral terminals
for AI-inputs (terminals 24, 27, 30, 33).
Humidity sensors AI3, AI4
AI3 and AI4 are to be connected to humidity transmitters
with output 0...10 V DC corresponding to 0...100% RH.
AI3, room humidity sensor, main sensor.
AI4, duct humidity sensor, limiting sensor placed in the
incoming air duct after the air handling unit.
Sensors AI3...AI8
Use PT1000 sensors. (See data sheet 4-150).
The choice of which sensors to connect is determined by
the choice of functions. The table, fig 3 can be used as an
aid in determining which sensors to install.
Connect the sensors according to the terminal schematics
on page 6.
AI8
is, depending on setting, used for:
1. Frost protection sensor for applications with water
heated heater.
2. High temperature limiting switch for applications with
electrical heater.
When used for high temperature limiting switch it must be
connected to a free contact closing on alarm.
!
IMPORTANT: Read these
instructions before installation
and wiring of the product.
Fig 1
Normal
Reduced
0
Auto
DI7
DI8
Fig 2
INSTRUCTION
1
ð
DMD
DTL
Corrigo
Corrigo
Digital inputs DI1...DI8
The digital inputs DI1...DI8 must refer to terminal 22.
N.B.
Terminal 22 must
not
be connected to any other
terminals but should only be used as reference for units
connected to DI1...DI8.
The inputs may only be connected to potential free
contacts.
Closed contact activates alarm or function.
Unused inputs are to be left open.
DI1
Input for filter guards
DI2
Input for circulation pump indication.
Must be connected for systems with water heating.
DI3
Input for chiller alarm
DI4
Input for rotation sentinel or ice build-up sentinel for
heat exchanger.
DI5
Input for smoke alarm.
DI6
Input for fire damper end-position indication,
external alarm or external switches ”not in Auto
position”.
(See textblock on DO6/DI6 on page 6).
DI7
Input for start of extended running time, normal flow.
DI8
Input for start of extended running time, reduced
flow.
Tel:+46 (0)31 795 44 60 Fax:+46 (0)31 795 38 50
Box 116 428 22 KÅLLERED, SWEDEN