Table of Contents
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1.1 Main features
pRack pR300T is the integrated CAREL solution for control and
management of CO
compressor racks.
2
The main features and compressor management characteristics of pRack
pR300T are listed below.
1.1.1
pR300T functionality list
Possibility of management integrated in a single control for
the medium temperature and low temperature line and the
high pressure stage.
Management of the high pressure valve (HPV)
Management of the receiver pressure regulating valve
(RPRV)
Valves management via external or built-in (PRK30TD*)
driver through fi eldbus communication port or via external
driver in position mode in 0...10V
Integration between HPV and receiver pressure
Accessory functions (pre-positioning, minimum and
Main features
maximum values diff erentiated by machine ON and OFF,
maximum distance from the setpoint, ...)
Oil cooler
Oil receiver and oil injection
Heat Reclaim
Integration between heat reclaim and HPV and RPRV valve
management
Double suction line and one high pressure stage
Up to 16 fans for condensing line
Inverter regulation on the fi rst compressor and on the fi rst fan
Generic functions easily confi gurable (ON/OFF, modulations,
alarms, scheduler)
S, M, D, L version (based on pCO5+ hardware)
Hardware
External display (pGDE) or built-in display
Scroll, reciprocating, digital scroll compressors management
Up to 12 piston compressors per line, a maximum of 4
diff erent sizes
Up to 4 alarms per compressor
Compressors
Inverter management, even with modulation inside the
dead zone
Pump down
Control of overheating in suction
Italian, English, German, French, Spanish, Russian,
Lingue
Portoguese, Swedish
Temperature: °C, °F
Pressure: barg, psig (all pressure values are also converted
Unit of measure
to temperature)
Date format settable between: dd/mm/yy, mm/dd/yy,
yy.mm.dd
Proportional band (P, PI) available for compressors and fans
Control
Neutral zone available for compressors and fans
FIFO
Compressor
LIFO
rotation
Timed
Fixed (the ON/OFF order can be set as required)
Scheduling available: heating/cooling, 4 daily time bands,
5 special periods (e.g.: closing period), 10 special days (e.g.:
Scheduling by
holidays)
calendar
Schedulable functions: set point compensation for
compressors and fans, split condenser (heating/cooling
only), anti noise, heat recovery, generic functions
Compensation from digital input, from scheduling, fl oating
Setpoint
based on supervisor parameter (compressors) or outside
temperature (fans)
High pressure, including activation of heat recovery or
Prevent
ChillBooster
Automatic and manual management
Confi gurable compressor alarms
Alarms
Double Signal on digital outputs for high or low priority
alarms
Log from application
Supervisor
Carel Modbus
protocol
Copyright HPL March 2021
1. INTRODUCTION
1.2 Components and accessories
The pRack pR300T is available in 4 hardware sizes listed in the table
(for the detailed description of each size, electrical characteristics and
installation, refer to Chapter 2):
Hardware sizes:
Size
Small
Medium
Medium + Driver
Large
(*) can also be used as digital inputs
For each size the following versions are available:
•
with built-in terminal, without terminal
All pRack pR300T models are equipped with:
•
integrated RS485 serial interface
•
anthracite gray plastic cover
•
connector kit
•
USB.
pRack pR300T models
Size
small
medium
driver
large
Tab. 1.a
5
Available
Available
digital
analog inputs
inputs
5 (*)
8
8 (*)
14
8(*) + 4
14+2
10 (*)
18
Code
Description
pRack PR300T small, USB, no display, BMS/FBUS
PRK30TS0E0
OPTO, 2 SSR, connector kit
pRack PR300T small, USB, display built-in, BMS/
PRK30TS3E0
FBUS OPTO, 2 SSR, connector kit
pRack PR300T small, USB, no display, BMS/FBUS
PRK30TS0F0
opto, connector kit
pRack PR300T small, USB, display built-in, BMS/
PRK30TS3F0
FBUS opto, connector kit
pRack PR300T small, USB, external display, BMS/
PRK30TS3FK
FBUS opto, connector kit
pRack PR300T medium, USB, no display, BMS/FBUS
PRK30TM0E0
OPTO, 2 SSR, connector kit
pRack PR300T medium, USB, display built-in, BMS/
PRK30TM3E0
FBUS opto, 2 SSR, connector kit
pRack PR300T medium, USB, no display, BMS/
PRK30TM0F0
FBUS opto, connector kit
pRack pR300T medium, USB, display built-in, BMS/
PRK30TM3F0
FBUS opto, kit connettori
pRack pR300T medium, USB, external display,
PRK30TM3FK
BMS/FBUS opto, kit connettori
pRack PR300T medium, EVD EVO embedded for 2
PRK30TD0E0
UNIV. EXV, USB, no display, BMS/FBUS opto, 2 SSR,
connector kit
pRack PR300T medium, EVD EVO Eembedded for 2
PRK30TD3E0
UNIV. EXV, USB, display built-in, BMS/FBUS opto, 2
SSR, connector kit
pRack PR300T medium, evd evo embedded for
PRK30TD0F0
2 univ. EXV, USB, no display, BMS/FBUS opto,
connector kit
pRack PR300T medium, evd evo embedded for
PRK30TD3F0
2 univ. EXV, USB, display built-in, BMS/FBUS opto,
connector kit
pRack PR300T medium, evd evo embedded for 2
PRK30TD3FK
univ. EXV, USB, external display, BMS/FBUS opto,
connector kit
pRack PR300T large, USB, no display, BMS/FBUS
PRK30TL0E0
OPTO, 6 SSR, connector kit
pRack PR300T large, USB, display built-in, BMS/
PRK30TL3E0
FBUS opto, 6 SSR, connector kit
pRack PR300T large, USB, no display, BMS/FBUS
PRK30TL0F0
opto, connector kit
pRack pR300T large, USB, display built-in, BMS/
PRK30TL3F0
FBUS opto, connector kit
pRack pR300T large, USB, external display, BMS/
PRK30TL3FK
FBUS opto, connector kit
pRack PR300T +0300018EN rel. 1.5 - 02.05.2017
ENG
Page 54 of 169
Available
Available
analog
digital
outputs
outputs
4
8
4
13
4
13
6
18
Tab. 1.b
Tab. 1.c
P4367 Rev 01
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