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INTELIGENT ENERGY SAVING

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IES - Intelligent Energy Saving is the management algorithm of efficient power, the completion of an advanced regulation system, that when applied to the control…

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PROBLEM SOLVED

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What is a problem for the customer, is an opportunity for SELPRO. The collection of customer issues resolved by SELPRO products.

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CLIMA-SINERGY

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Designed to interact with SELPRO regulators and ventilation systems, the software collects operating parameters and then analyses and modifies them to optimise system performance during…

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RGM300

Master & Slave System to drive 3 phase AC fans motors, with Spray On-Off & Modulating System Management and Modbus (RTU) serial connection.

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Areas of use

Used in HVAC&R plants to control and regulate:
  • ventilation, suction
  • destratificators
  • temperature (dry-cooler, heaters)
  • pressure (ventilated heaters like condensers, evaporators)
  • differential air flow (laminated flow plants, suction hoods)

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What is that

RGM300 device is a multifunction unit with 2 transducer inputs, to regulate speed of 3 phase AC Motors used in axial or centrifugal fans. Designed using a "state of art" microcontroller, is suited to have a choice of 12 different default configurations. It is optimized with “IES”, innovative control algorithm for HVAC&R applications.
Management of WET-POWER (UR%) is included in the firmware, driving an optional Spray system with its own Set-Point and proportional band.
Using a serial Modbus line is possible to read & write all the parameters of the device, testing and controlling also from remote sites the state of the machine. A Selpro software called Clima-Sinergy is already allowable.
Clima-Sinergy allows data collection, analysis with graphs, change of working parameters, optimization of performances.

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Driving Mode

Master Unit - automatic regulator:
two different modes are selectable:
  • PID with "IES" technology to keep at Set Point the selected transducer value (i.e. temperature, pressure)
  • P (proportional)to keep inside Proportional Band the selected transducer value (i.e. temperature, pressure).
Driving command is selectable direct (DIR) or reverse (REV).

Slave Unit - repeater driver:
the driving command is directly related to the input command value, still selectable are direct (DIR) or reverse (REV) modes.

Dati RGM300

Three-Phase AC Power Supply 230Vac ±10%
400Vac ±20% (Range esteso std)
480Vac ±10%
other voltages on request
 
Nominal Current (RMS) at 50°C 12A
20A
28A
40A
60A
  
Frequency 50/60Hz aut. sel.
  
Driving Command continues 0...100%
  
Motor Connection 1
2
4
8
  
Control Technology digital
  
Motor control type phase cutting
  
Case IP Grade IP55
IP00
  
Conforms to the following standards Standard EN 61800-3 (directive 2004/108 CE)
Standard EN 50178 (directive 2006/95 CE)
Standard EN 60204-1 (directive 2006/95 CE)
Connectable into IT-TT-TN systems
  
Display and settings six digits seven segments display with keyboard
programming dip switches
signaling leds
system reset
  
Control Function PID master, IES technology
proportional master (P)
slave (power unit)
starter
  
Number of working parameter set 2
  
Control Parameters PID parameters
2 set-point
2 proportional band
2 minimum speed limits
2 cut-off
2 maximum speed limits
2 maximum night speed limits
2 acceleration / deceleration slope (starter)
2 set point auxiliary output
2 proportional band auxiliary output
motor phase V/I displacement correction (cosφ)
Modbus addressing
Modbus parameters
adiabatic system parameters
  
Special Features direct / reverse mode selection
bypass driving Resonances
Alarm Relè Programming
set-point position selection (min./max RPM)
maximum speed Limit bypass (over speed)
minimum speed limit bypass (cut-off)
ON/OFF command for spray system
TK thermal contact programming
electric panel alarm
automatic reset
restore default parameters
adiabatic system management
 
Serial Connections 1 RS-485 Modbus slave (on request)
  
Remote Control Protocol Modbus RTU
  
commands analog input 2
  
Analog input type 0-20mA
4-20mA
0-5Vdc
0-10Vdc
NTC 10KOhm 25°C
  
Transducer type 0...15bar
0...25bar
0...30bar
0...45bar
-20°C...+90°C
0...20mA
0,5...4,5Vdc
0...10Vdc
  
ON/OFF inputs number 5
  
Logic inputs working modes (S1) direct/reverse mode
(SP) second set-point
(S2) remote start/stop
(S5) RPM night limit
(TK) thermal contact or electric panel alarm
 
Auxiliary power supply 5,0 Volt (Vrr) stabilized
10,0 Volt (Vrr) stabilized
20-24 Volt ±10%
  
0-10Vdc programmable analog outputs 1
  
Relays outputs 1
  
Relays programmable outputs 1
  
Protections power supply overvoltages
maximum internal temperature
load maximum current (optional)
phase loss detection
transient suppressors on analog signal
transient suppressors on logic inputs
short circuit protection on auxiliary power supply
overcurrent protection on current signal
probe failure
input lines insulated from power supply voltage
  
Work temperature -10°C...+50°C
  
Storage temperature -20°C...+80°C