Subject Ref. No. Page Alfa-V Dry Coolers IM00003_0808_AM 1/12. Issued by Department Date Menegolo Andrea Product Development

Transcription

1 INSTRUCTION MANUAL VOLTAGE REGULATOR FOR TEMPERATURE PROBE (3ph) Subject Ref. No. Page Alfa-V Dry Coolers IM00003_0808_AM 1/12 Issued by Department Date Menegolo Andrea Product Development Notes Vrtm-0904-EN-NT

2 VRTM REGULATOR CONTENTS PRELIMINARY CHECKS. 1 SPECIFICATIONS OF USE 2 Code and Models..2 Choosing the regulator. 2 Technical specifications... 2 GENERAL SPECIFICATIONS.. 3 Overall dimensions.. 3 Mechanical and electrical installations POWER TERMINALS CONTROL TERMINALS.. 6 Relay description, analogue output description... 7 Controls and analogue input descriptions. 7-8 FAULTS - INDICATORS... 9 Led description Fault descriptions (alarms)... 9 TECHNICAL ASSISTANCE.. 9 MEMORY FILE Page

3 WARNINGS! BEFORE INSTALLING THE VRTM REGULATOR, READ THE MANUAL AND FOLLOW ALL INSTRUCTIONS CAREFULLY. WHEN THE REGULATOR SUPPLY! IS ON, NEVER TOUCH INTERNAL ELECTRICAL PARTS! IN COMPLIANCE WITH EUROPEAN REGULATIONS AND THE EMC RULES AND REGULATIONS NOTE THAT THE VRTM REGULATOR IS DESIGNED TO BE INCORPORATED IN MACHINES OR INTEGRATED IN STANDARD ELECTRICAL CABINETS AND IS THEREFORE CONSIDERED A COMPONENT. IT IS THE INSTALLER S RESPONSIBILITY TO ENSURE COMPLIANCE WITH THESE STANDARDS. IN THE EVENT THAT REGULATOR OPERATION FAILURE COULD CAUSE DAMAGE TO OBJECTS OR PHYSICAL INJURY, IT IS THE RESPONSIBILITY OF THE INSTALLER TO ADD DEVICES OR SYSTEMS THAT PROTECT AGAINST, OR WARN OF, CONTROL FAILURE. FAE FAGAN APPLICAZIONI ELETRONICHE RESERVES THE RIGHT TO MAKE TECHNICAL MODIFICATIONS TO IMPROVE THE QUALITY AND FEATURES OF THEIR PRODUCTS AT ANY TIME. PRELIMINARY CHECKS - GUARANTEE Before installing the VRTM regulator check to make sure it has not been damaged during transport and that it corresponds to the model ordered, verifying that the technical specifications printed on the label correspond to those on the order form. The regulator is guaranteed for up to 12 months from delivery. The guarantee covers production faults not attributable to goods which have been incorrectly used or tampered with in any way. The shipping company must be notified of any faults due to transport according to current legislation. INTRODUCTION The instructions reguard the VRTM regulators running with software version V1.2 for temperature ntc probe. They are programmable from a ZTM2 keyboard version V1.0, V1.0st for temperature ntc probe. SERIAL NUMBER / SOFTWARE VERSION VRTM SPECIFICATIONS OF USE The VRTM electronic voltage regulator is designed to control fan speed in air conditioning, cooling and heating systems. It is based on the principle of symmetrical phase step capacity control. VRTM can function as master, slave or manual regulator. In MASTER mode, output voltage regulation is directly proportional to the variation in the signal of the connected temperature probe. When used as SLAVE the VRTM functions as a simple final power stage, with the relative control signal provided by a remote control (VRTM functioning as master or other device). In the system calibration phase it is useful to regulate the output voltage MANUALLY in order to identify the characteristics of the application. 1

4 Position CODE VRTM 12 C NT PL 55 V1.3 (code example) Pos. 1 : Regulator mode VRTM = three phase regulator VRMM = single phase regulator Pos. 2 : Nominal current 12 = 12A / 20 = 20A Pos. 3 : Power supply A= 23 50Hz C= 230/40 50Hz D= 44 60Hz Pos. 4 : Probe type PR = pressure NT = temperature NTC Pos. 5 : Box PL = plastic MT = aluminium Pos. 6 : IP grade 55 = IP55 Pos. 7 : Software version 1.2 (for vers. V1.0 / V1.0st ZTM2NT keyboard) VRTM MODEL Model * Power Current Current Power Supply Freq. Max nominal max ** dissipation voltage kw A rms A rms W V~ (+10-15%) Hz VRTM12C 4,5/ /40 50 VRTM20C 7,5/ /40 50 VRTM28C 11/ /40 50 VRTM40C 15/ /40 50 VRTM50C 18/ /40 50 * For VRTMXXD models at 440/46-60Hz all current and power data are the same ** Max current refers to an environment temperature of 50 C for a maximum time of 10 seconds every 5 minutes ( In +50%, class 12, 3%). TECHNICAL SPECIFICATIONS POWER SUPPLY 230/40~ +10%/-15%, (230 V~, 440 V~ on request) FREQUENCY 50Hz OUTPUT VOLTAGE 0-99% of power supply CONTROL INPUTS One or two ntc probes (10kohm at 25 C), or 0...1= signal. DIGITAL OUTPUT Emerg. relay (1A-25~/3A-3=) ANALOGUE OUTPUT 0 1= (max load 5mA) OPERATING TEMPERATURE -10 C/+50 C STORAGE TEMPERATURE -20 C/+80 C MAX DISSIPATOR TEMP. 75 C PROTECTION RATING Self-extinguishing plastic covering IP55 for 120 C environment, pollution grade 3, fire resistance D, impact resistance (6J). ELECTRIC CLASSIFICATION Class II for control inputs (insulation of 4kV with live parts). Class I for accessible parts. 2

5 PROTECTIONS Phase failure, internal overheating, probe missing, motor thermal cutout. Protection against power surges Class II ACTION-DISCONNECTION Type 1(Y). Residual motor current < 15mA SOFTWARE CLASS Class A ELECTRICAL CONNECTION For VRTM12-20 Class X, for VRTM(S) Class M. STANDARDS For the low voltage directive 73/23, the reference standard EN was used. For the electromagnetic compatibility directive EMC 89/336, reference standard EN was used. With reference to some typical applications, the VRTM12-20 regulators are suitable for residential and commercial environments, while the VRTM regulators are suitable for industrial environments. FAE regulators are designed to be installed inside a machine or a standard electrical cabinet and are therefore considered a component. The installer must ensure compliance with these standards. WARNING This control does not contain current harmonic current filters and may cause interference, in which case the user may be required to take adequate measures with reference to EN and EN OVERALL DIMENSIONS Model IP Weight (Kg) Dimensions (mm) fixing screws (mm) A B C D E F Ø VRTM , / M4 VRTM , / M4 VRTM / M5 VRTM / M5 VRTM M5 D B Fae Elettronica Vicenza ITALY VRTM F E F A C 3

6 MECHANICAL INSTALLATION The VRTM regulator must be wall-mounted vertically, in order to guarantee adequate dispersion of heat in the area of air circulation and prevent obstructions to air flow in the dissipator zone. To prevent the formation of condensation and ensure correct operation also at low temperatures, constant power supply should be ensured (avoiding repeated shutdowns). Avoid positioning it near heat sources and keep away from direct sunlight. The regulator has IP55 protection rating but must be protected from sprays of water, oil, corrosive liquids, deposits of metallic dust and gas. Also ensure that it is not subject to vibrations. ELECTRICAL INSTALLATIONS Attach the regulator to a non-painted plate with anti-corrosive treatment. If the length of the motor cable exceeds 5 metres, use shielded cable. To avoid dispersion currents, both ends of the motor cable shield, the motor earth, and the regulator earth must be connected to the same earth pole. If the control cable length exceeds 2 metres, use shielded cable, connecting the shield only at the end of the regulator. Ensure that the control 0 volt is not connected to earth. If the length of the power, motor and control cables exceeds 10m, make sure they are separated by at least 0.3 metres to avoid creating a coupling effect. If controls are set up in environment subject to electromagnetic disturbance, they should be housed inside a suitable metallic enclosure. All connections wires must resist to a 80 C working temperature. Avoid routing any electric wires near the copper coils of the filter, for control cables use the suitable plastic support! Tighten all wires on control and power terminal boards fully down, avoiding protrusion of the multi-stranded wire. Do NOT touch the electronic equipment when the power line is on! During voltage insulation tests disconnect the regulator power lines In/Out. Use a true RMS tester to measure the current or voltage values Terminals Description Recommended wire sections (ISO mm²) VRTM12 VRTM20 VRTM28/40/50 EARTH 2, L1 L2 L3 SUPPLY 2, T1 T2 T3 MOTOR 2, (U V W) CONTROLS 0,2 1,5 0,2 1,5 0,2 1,5 To connect wiring to the spring terminals, apply leverage with a screwdriver on the lever or on the upper hole to open the terminal. The power wires of the VRTM regulators must be crimped to form an eyelet (M5 hole) and the nuts (E8) tightened with a wrench. The power wires of the VRTM 50 regulators must be crimped to form an eyelet (M6 hole) and the nuts (E10) tightened with a wrench. Connect all earth wires, both of the line and motor(s) to the relative internal terminals on the regulator (see drawings). 4

7 LINE FUSES To protect the regulator electric power components also in the event of fan short-circuits, the installer/user must provide quick acting type fuses for semiconductors. Model Nominal current Max current Fuse (Arms) (Arms) (A) VRTM VRTM VRTM VRTM VRTM VRTM/T12/20 VOLTAGE CHANGEOVER EXPANSION OUTPUTS MOTORS L1/L2/L3/Ground (R / S / T) SUPPLY TERMINALS Ground /T1/T2/T3 ( U / V / W) MOTOR TERMINALS VRTM/T 28/40/ VOLTAGE CHANGEOVER L1 L2 L3 PE T3 T2 T1 ( R S T ) ( W V U ) SUPPLY TERMINALS / MOTOR TERMINALS 5

8 CONTROL TERMINALS Terminal Function Description 1 No Relay contact normally open 2 3 Com Nc Relay common (1A-25ac / 3A-3=) Relay contact normally closed 4 isolated 5 I1 Cooling1 cycle / Cooling2 cycle 6 I2 Maximum power control 7 I3 Start/stop control 8 I4 Input for external emergency (motor thermal cutout) 9 10 Ou t Analogue output 0-1= per control reg. slave isolated 11 isolated 12 IN2 Input probe 2 NTC (10kohm at 25 C) V= Auxiliary supply (max100ma) isolated 15 IN1 Input probe 1 NTC (10kohm at 25 C) or 0-1dc impedance 20KΩ) V= Auxiliary supply (max100ma) Controls card ALLARM MAX POWER OUT POWER ON RELAY ON DL1 DL2 DL3 DL4 RELAY I 1 COOL 1 / COOL2 I 2 MAX POWER OUT I 3 START / STOP I 4 STOP EMERGENCY OUT IN 2 Input IN 1 Input S1 S2 S3 S4 S5 S6 S7 S8 ON OFF MICRO SWITCHES 6

9 RELAY OUTPUT The relay output can be set via the keyboard as follows (keyboard parameters 217 and 35): Fault = Deactivation of relay (alarm). Motor on = Activation of relay with motor on. Temp. Max = Activation of relay with delivery of maximum temperature. Temp. Min = Activation of relay with delivery of minimum temperature. Cyclical rotation = According to cyclical rotation of the power line phase. WARNING! In the fault configuration the relay is normally activated, if there is an alarm it deactivates returning to the position shown in the figure on page 6. CONTROLS Control I 1 : Active only if I 3 and I 4 controls are closed and only while functioning as master. Open = cooling cycle 1 Closed = cooling cycle 2 (if connected to the keyboard RUN1/ RUN2 will appear on display ) Control I 2 : Active only if I 3 and I 4 controls are closed. Max power Open = no control / Closed = if Master config., voltage applied to motor at set 217 parameter; if Slave config., voltage applied to motor at set 36 parameter, if manual config., voltage applied to motor at set 46 parameter. Control I 3 : Always active Start/stop Open = stop, the regulator is deactivated (if connected to the keyboard RDY will appear on display) Closed = start, resets the regulator to the pre-chosen function (if connected to the keyboard Fan will appear on the display) Control I 4 : Always active Emergency Open = external emergency present, deactivation of the regulator Closed = no external emergency ANALOGUE OUTPUT Instant output 0 1= proportional to the output voltage T1/U - T2/V - T3/W of the regulator. ANALOGUE INPUT The regulator is provided with two analogue inputs which can be used according to the functions set via the keyboard (Master or Slave, to see pag.1). While functioning as Master the analogue inputs can be used in the following 3 ways (parameter 215): - Probe1 : Use of input 1 only (sensor 1) - Major : Use of inputs 1 and 2 with priority of the higher values (sensor 1, sensor 2) - Minor : Use of inputs 1 and 2 with priority of the lower values (sensor 1, sensor 2) 7

10 Input 1 : Analog input for NTC sensors with 2 wires (10kohm at 25 C) or 0 1dc signal. To adapt the probe signal set the keyboard (parameter 214) and set the micro-switches as follows: Type probe/s S1 S2 S3 S4 S5 S6 S7 S8 0 1= off off off off off on on off C on off off off off on on on C on on on off off on on on C on on on on on ono on on Input 2 : Analog input for NTC sensor with 2 wires (10kohm at 25 C). If the regulator is functioning as slave then use input 1 set for sensor 0..1dc, DO NOT use input 2. Example ntc probe/s (Master mode) Input 2 Input 1 IN IN S1 S2 S3 S4 S5 S6 S7 S8 ON OFF Probe 2 ntc out / - + Probe 1 ntc Example 0 1= signal (Slave mode) Input 1 IN IN S1 S2 S3 S4 S5 S6 S7 S8 ON OFF + - Remote control 0...1= signal 8

11 FAULTS - INDICATORS LED DESCRIPTION (see control board figure on page 6) DL1 DL2 DL3 DL4 Lit: indicates regulator fault (general alarm) Lit: indicates regulator at maximum delivery Lit: indicates power supply on Lit: indicates relay activated FAULT DESCRIPTIONS Failure of power supply to turn on, sensor disconnected, external emergency (control 14 open), over-heating inside the regulator; these emergencies act on the regulator in the following way: Led DL1 illuminates Disabling of the output voltage T1/U - T2/V - T3/W Resetting to zero of the analogue output Deactivation of the relay if set for fault (setting of alarm for parameters 217 and 35) Display of the type of emergency if the keyboard is connected: FLT (fault); To check the cause, enter operation display mode (see page 4 ZTM2 keyboard) and use the arrow key to select the relative item in the drop down menu. Open I3 (start/stop) control or turn off the power supply to reset the regulator. TECHNICAL ASSISTANCE Contact FAE assistance explaining clearly the following points: Regulator model Serial number (pag.1) Problem encountered DISMANTLING Once the regulator is reported as defective it must be delivered to the nearest service department. It can be partially recycled due to its plastic and metallic parts. The electronic boards cannot be recycled. 9

12 PROGRAM FILE DEFAULT V1.2 Configuration 11) Mode master Master general 211) Skip voltage 50% 212) Skip window 0% 213) Reg. ramp. 5 s 214) Probe range C 215) Probe config. probe 1 216) Config. relay defect (emergency) 217) Max voltage 100% Master cycle 1 221) Voltage V1 35% 222) Temperature T1 12 C 223) Voltage V2 80% 224) Temperature T2 35 C 225) Temp. TOFF 11 C 226) Temp. TMAX 37 C Master cycle 2 231) Voltage V1 35% 232) Temperature T1 10 C 233) Voltage V2 80% 234) Temperature T2 28 C 235) Temp. TOFF 9 C 236) Temp. TMAX 29 C Slave 31) Reg. ramp 5 s 32) Voltage VOFF 35% 33) Skip voltage 50% 34) Skip window 0% 35) Config. relay defect (emergency) 36) Max voltage 100% 10