13
JOHNSON CONTROLS
FORM NO.: 6U6K-B01E-NB-EN
•
IPU3 (including I/O board and core board)
•
Compressor and fan contactors
•
Compressor thermal relays
•
Main circuit breaker
•
Power sequence protector
•
Power and control wiring terminals
•
Compressor power terminals
Short Circuit Withstand Rating of the unit electrical enclosure
shall be (400V: 5,000 Amps). Rating shall be published in
accordance with EN 60204-1.
The power wiring is routed through liquid-tight conduit to the
compressors, fans, driver and transformer.
DRIVER PANEL
The inverter compressor driver is enclosed in a separate panel
on the base frame. It converts alternating current into direct
current to drive the compressor rotating at the rate of 10 RPS
(round per second) as a minimum and 130 RPS as a maximum.
To improve the heat emission efficiency, a cooling fan is fitted
at the backside of the panel for forced convection. Driver
operation status and faults are displayed through the flicker of
the LEDs.
Driver panel contains:
•
Filter board
•
Rectification circuit
•
Inverter
•
Terminals
•
Cooling fins and fan
All the wirings inside are factory-mounted.
STANDARD EQUIPMENT
DISCHARGE PRESSURE TRANSDUCERS –
The addition
of pressure transducers allows models to sense and display
discharge pressure. This allows the unit to automatically adjust
condenser fan speed to suit different ambient conditions, as
well as protect the unit from over pressure
(Factory-Mounted)
.
SUCTION PRESSURE TRANSDUCERS –
Permits unit to
sense and display suction pressure. This capability is standard
on all models. The suction pressure is monitored for system
superheat control
(Factory-Mounted)
.
CONTROL TRANSFORMER –
Power panel shall be
supplied with a factory mounted and wired control transformer
that will supply all unit control voltage from the main unit
power supply. Transformer shall utilize scheduled line voltage
on the primary side and provide 230V/1N on secondary
(Factory-Mounted)
.
COMMUNICATIONS –
Communication capability for
BACnet (MS/TP), Modbus and N2 as standard via SC-EQUIP
(SC-EQ) board
(Factory-Mounted)
.
The SC-EQ board is designed with four active serial ports: The
J12 BAS (RS-485) port, the J7 Equipment (RS-232) port, the
J8 Equipment (RS-485) port and the J1 CS port which allows
equipment data to be sent to the Johnson Controls Remote
Operation Center for remote unit monitoring and diagnostics.
Refer to Wiring Diagram for details.
SERVICE ISOLATION VALVE –
Service suction and disch-
arge (ball type) isolation valves are added to unit per system
(Factory-Mounted)
.
DUAL RELIEF VALVES –
Two relief valves are fitted at low
pressure, and two relief valves at high pressure side for each
refrigeration circuit
(Factory-Mounted)
.
FLOW SWITCH –
Vapor proof, paddle-type with 1''NPT
connection for upright mounting in horizontal pipe. This flow
switch or its equivalent must be supplied with each unit to
protect the heat exchanger from loss of liquid flow
(Factory
Mounted)
.
ENCLOSURE PANELS –
Consists of steel panel guards
mounted on bottom part of the unit to prevent unauthorized
access
(Factory mounted).
COMPRESSOR ACOUSTIC BLANKETS AND ENCLOS-
URES –
The inverter compressor is individually enclosed in
an acoustic sound blanket made of two layers of acoustical
absorbent polyester fiber of 15 mm thickness and one layer
of anti-vibrating heavy material thickness of 1 mm with
lined cotton. The blanket is closed by two sheets of PVC,
reinforced for temperature and UV resistance. Also it goes
SECTION 2 – PRODUCT DESCRIPTION
Cooke Industries - Phone: +64 9 579 2185 Email: [email protected] Web: www.cookeindustries.co.nz
