ALCO CONTROLS EXD-C Serie Installationsanleitung

Emerson Electric GmbH & Co
Heerstr.111 - D 71332 Waiblingen
Tel.: 07151 509-0 - Fax.: -200
EXD-C.. Configurable Driver Modules are for driving ALCO stepper motor
driven electronic expansion valves series EXV-5, -6, -7, -8 in conjunction
2
with Carel pCO/pCO controller. These instructions are for versions supplied
with the following software:
Software 050 for EXD-C00, Software 060 for EXD-C01 and Software 070 for
EXD-C00.
!
Safety instructions:
• Read operating instruction thoroughly. Failure to comply can result in
device failure, system damage or personal injury.
• It is intended for use by persons having the appropriate knowledge and
skill.
• Switch off all voltages / currents before cabling.
• Comply with local electrical regulations when wiring
• Do not operate system before all cable connections are completed.
• Do not apply 110/220/230 V to any terminal of driver module
Installation and wiring
• Install EXV in system per operating instructions of valve.
• Make sure that driver type match to the type of valve in the system. EXD-
C00 for EX7, EXD-C01 for EX5/EX6 and EXD-C02 for EX8.
• Install Driver Module, pressure transmitter, temperature sensor and
Uninterruptible Power Supply.
• Set-up all wire connections as shown wiring and network diagrams.
• Recommended wire cross section between 0.5 mm
• Keep the "A" and "B" connections separate. Connect A as near as possible
to the connection J17 (pCO I/O board) or J1 (pCO
• Warning: To comply with EMC regulation, it is recommended to keep the
cable between EXV and driver as short as possible and separated from the
other cables. It is advisable to install a filter on main supply voltage line.
The compliance with regulation must be checked for whole plant.
Prepration for Start-up:
• Do not apply voltage to the driver before completion of wiring.
• Do not operate the driver and valve when the system is under vaccum or
without refrigerant except for closing valve before charging of system.
Wiring Diagram
To next driver
if available
Uniterruptible Power Supply
ECP-024
PCN: 804 558
Rev.: 1.0324
VG1(next driver) / G(I/O board)
VG0(next driver) / G0(I/O board)
Rx/Tx+
Rx/Tx-
pLAN Communication
(pCO I/O board)
ECN-C60
Document Nr.: A6.5.071 / 2
ALCO CONTROLS
2 2
and 2.5 mm .
2
I/O board).
Power supply
Driver I
Driver II
Power output Ub: 18 V DC
Transformer
Power input
24 VAC
pLAN
PT3-07A EX5/EX6
Electrical
connection
ECC-028
Replacement for A6.5.071 / 1
Installation Instructions
Configurable Driver Module EXD-C Series
for Electronic Expansion Valves EX5 ... EX8
• Vacuum the entire system.
• Warning: Alco EXVs are delivered at half open position. Do not charge
system before closure of valve.
• Apply supply voltage to driver module for the following times without
operating Carel pCO/pCO
Valve
EX5/EX6
EX7/EX8
• After closure of valve, intrup power supply to driver module and charge the
system with refrigerant.
• For setting, start-up and operation, please see the operating manual
handbook.
Technical data, power supply and inputs:
• Main supply voltage: 24 V AC (+10%, -15%), 50-60Hz; 24 V DC (+10%, -
0%). Power supply line to driver to be protected by 1.0 A external fuse.
• Use a safety class II transformer. Minimum power required 20VA.
• Emergency supply voltage (from ECP-024): +18 Vdc.
• 1 analogue input 4-20mA for pressure transmitter, measurement range
-0.8 to 7 bar (PT3-07A) or 0 to 18 bar (PT3-18A).
• 1 NTC analogue input, very fast responce with precision ±0.5K
Outputs:
• 4 current-outputs for stepper motor of EX5/EX6/EX7/EX8.
Nominal current: 0.5A for EX5/EX6, 0.75A for EX7 and 0.8A for EX8.
Maximum cable length: 6 meter AWG20/22.
• 1 digital input for 5V/5mA insulated contact (potential free/dry contact)
• 1 +24VDC supply output for PT3.
Serial communication:
• pLAN opto insulated; use a twisted cable (2 wires + shield) AWG20/22
type. Shield must be connected to GND terminal of Carel I/O board.
Uninterruptible power supply ECP-024
• Power supply voltage: 24 VAC ± 10%
• Power outputs: Two, each +18VDC
Network comunication
Power supply
Transformer
24 VAC 24 V
Fuse
Filter
1.0 A
B
Driver module number 1
Driver module number 2
EX7/EX8
Electrical
plug
connection
To next driver module
Date: 24.09.2003
2
controller:
Time, seconds
Min.:2 Max.:30
Min.:6 Max.:30
pCO or pCO2
I/O board
Terminal J11: pCO (I/O board)
Terminal J11: pCO2 (I/O board)
Terminal J17: pCO (I/O board)
Terminal J1 : pCO2 (I/O board)
GB
Serial communication pLAN:
Twisted cable (2 wires + shield)
Cable shield to GND
A
To next driver module
DWG Nr.: