EC DRIVES IN VTS DEVICES
SPECIFICATION, PROGRAMMING, OPERATION
User Manual
Please read the following documentation carefully before installing, maintaining and operating EC drives. In case of doubt, contact the official VTS support. This manual may only be used by a qualified service representative.
SAFETY ISSUES
All drives described in this manual may only be operated, connected, installed, repaired and modified by qualified personnel. Failure to perform any of these operations correctly may result in death, electric shock, improper installation, or product damage. The installation should be carried out with undamaged cables and with proper grounding. Follow the pinout diagrams dedicated to your drives.
Do not open or disassemble the drive while power is connected to the device. This can cause fatal injury due to electric shock. If disassembly is necessary, wait at least 5 minutes after disconnecting from the power supply.
It is the responsibility of the user and installer to ensure that the system is properly grounded and protected in accordance with national and local standards. VTS is not responsible for any damages or injuries caused by incorrect installation, faulty electrical circuits or other failures.
PRODUCT DESCRIPTION AND TECHNICAL SPECIFICATION
Air handling units and other selected VTS devices can be equipped with various configurations of EC drives, tailored to the needs and requirements of customers.
| Type | Rated speed [RPM] | Maximum output power [kW] | Regulator type – power [kW] | Supply voltage [V] |
| Axial 444 Cross flow WING 200 | 1400 | 0.30 | 0.37 | 1×230 |
| Axial 420 | 1340 | 0.21 | 0.37 | 1×230 |
| Axial 315 | 1400 | 0.08 | 0.37 | 1×230 |
| Cross flow WING 100 WING 150 | 1340 | 0.21 | 0.37 | 1×230 |
| Plug 190 | 4500 | 0.17 | 0.17 | 1×230 |
| Plug 225 | 3600 | 0.35 | 0.37 | 1×230 |
| Plug 225 | 4500 | 0.76 | 0.75 | 1×230 |
| Plug 250 | 3000 | 0.35 | 0.37 | 1×230 |
| Plug 250 | 3800 | 0.70 | 0.75 | 1×230 |
| Plug 315 | 2060 | 0.37 | 0.37 | 1×230 |
| Plug 315 | 2600 | 0.72 | 0.75 | 1×230 |
| Plug 310 | 3160 | 1.50 | 1.50 | 3×400 |
| Plug 355 | 3200 | 2.40 | 2.40 | 3×400 |
Table 1 – types of EC drives
VTS reserves the right to change the given configurations without prior notice. Any modifications or configuration changes other than those proposed must first be reported and consulted with the VTS technical department.
INSTALLATION
3.1 Cable requirements
In the case of modular AHUs (without factory wiring between the drives and the electrical box), only hard wire or copper wires with ferrules should be used for wiring.
The length of control cables should not exceed 20m for 0-10V control and 40m for Modbus control.
To reduce operational problems, control cables must be shielded.
Use cables that meet the voltage, current, load, and insulation requirements for the type of drive you are using.
Use appropriate protection in the electrical installation. If the fuses are damaged, replace them with the same value as those used at the factory.
Before connecting the power supply, make sure that the drive specifications on the nameplate match the supply voltage.
3.2 Pinout
3.2.1 0.17 / 0.37 / 0.75kW
The 0.17kW, 0.37kW and 0.75kW drives are equipped with a common power supply and communication cable. It is terminated with a connector adapted for connection in AHU control boxes. 
| Color | Function | Remarks |
| green | RS485 A (+) | Modbus RTU |
| yellow | RS485 B (-) | Modbus RTU |
| red | 10V output | – |
| black | 0-10V input | – |
| white | 0-10V GND | – |
| yellow – green | PE | – |
| brown | L | – |
| blue | N | – |
Table 2 – 0.17 / 0.37 / 0.75kW EC drives pinout
3.2.2 1.5 / 2.4kW
The 1.5kW and 2.4kW drives are equipped with two separate cables: power supply and communication. They are terminated with cable sleeves and a connector. The cable with the connector (fault relay) is not used in VTS automation. 
| Color | Function | Remarks |
| brown | RS485 A (+) | Modbus RTU; there are two brown wires – the communication wire has a smaller cross-section than the power wire |
| black | RS485 B (-) | Modbus RTU; there are two black wires – the communication wire has a smaller cross-section than the power wire |
| green | RS485 GND | Modbus RTU |
| white | FG (pulse output) | 2 pulses per rotation |
| red | 10V output | – |
| yellow | 0-10V input | – |
| blue | 0-10V GND | there are two blue wires – the communication wire has a smaller cross-section than the power wire |
| brown | L1 | there are two brown wires – the communication wire has a smaller cross-section than the power wire |
| blue | L2 | there are two blue wires – the communication wire has a smaller cross-section than the power wire |
| black | L3 | there are two black wires – the communication wire has a smaller cross-section than the power wire |
| yellow – green | PE | – |
| orange | NO contact of the fault relay | – |
| grey | COM contact of the fault relay | – |
| red | NC contact of the fault relay | – |
Table 3 – 1.5 / 2.4kW EC drives pinout
COMMUNICATION OPTIONS
4.1 Factory addressing and communication type
EC drives are equipped with Modbus RTU and 0-10V control.
The table below shows the default settings of drives in VTS AHU depending on the type of the AHU:
| X | Ventus | Compact | ||||
| Standing | Suspended | |||||
| Automation | No automation | Automation | No automation | Automation | No automation | |
| Communication | Modbus | 0-10V | Modbus | Modbus | Modbus | 0-10V |
| Addresses | supply: 41,42,43,44,45,46,47,48,49,40 exhaust: 51,52,53,54,55,56,57,58,59,50 |
|||||
Table 4 – factory settings of EC drives
To enable correct communication between EC drives and the uPC3 controller, select the appropriate drive type in the first line of settings on the I03 mask:
- 0.17 / 0.37 / 0.75kW: EC
- 1.5 / 2.4kW: SNMU
4.2 Modbus RTU
The basic method of communication between EC drives and the AHU controller used in VTS automation is a serial transmission in the Modbus RTU (RS-485) protocol with the parameters 9600/8/n/1.
Drives control systems can be connected to the Modbus grid only by means of shielded cables (screens should be grounded on both sides).
Use parallel or daisy chain connection when connecting EC drives to the bus.
4.2.1 Available Modbus registers – 0.17 / 0.37 / 0.75kW drives
| Coils – read / write | |||
| Address | Function | Range | Remarks |
| 0 | Motor on / off | 0/1 | 1 = motor on (read only) |
| 1 | Controller reset | 0/1 | 1 = controller reset |
Table 5 – available Coils – 0.17 / 0.37 / 0.75kW drives
| Discrete Inputs – read / write | |||
| Address | Function | Range | Remarks |
| 0 | Undervoltage | 0/1 | 1 = voltage too low to operate |
| 1 | Overvoltage | 0/1 | 1 = voltage too high to operate |
| 2 | IGBT overcurrent | 0/1 | 1 = overcurrent protection active |
| 3 | Motor hot | 0/1 | 1 = temperature protection active; power reduced |
| 4 | Phase loss | 0/1 | 1 = phase or motor sync loss |
| 6 | Checksum error | 0/1 | 1 = parameters checksum fail (TBD) |
| 7 | Circuit fault | 0/1 | 1 = error was detected during internal check |
| 8 | Motor fault | 0/1 | 1 = motor does not behave as expected |
| 9 | Controller hot | 0/1 | 1 = controller to hot to operate |
| 10 | I2R IGBT fault | 0/1 | 1 = software IGBT protection triggerred |
| 14 | Restart fault | 0/1 | 1 = fault condition repeated several times in a short time; controller should be power cycled |
| 18 | Waiting to stop | 0/1 | 1 = motor should be stopped, but it is still spinning |
| 24 | RPM REG | 0/1 | 1 = speed regulator active |
| 25 | POWER REG | 0/1 | 1 = power limit regulator active |
| 27 | OVERMOD REG | 0/1 | 1 = overmodulation; controller can no longer supply the voltage required by the motor |
| 28 | REGEN REG | 0/1 | 1 = motor is in regeneration mode; RPM incerased tp avoid DC bus overvoltage |
| 29 | IPHASE REG | 0/1 | 1 = RMS motor phase current limit reached |
| 30 | SYNC REG | 0/1 | 1 = motor is in synchronous mode |
Table 6 – available Discrete Inputs – 0.17 / 0.37 / 0.75kW drives
| Holding Registers – read / write | ||||
| Address | Function | Range | Resolution | Remarks |
| 0 | Setpoint | 0 – 10000 | 0,01% | Speed setpoint 0 = stop 10000 = maximum speed |
| 1 | Direction | 0/1 | 1 | Rotation direction 0 = clockwise 1 = anti-clockwise |
| 2 | MAX RPM | MIN RPM – RATED RPM | 1 | Maximum allowed speed |
| 4 | MIN RPM | 10% RATED RPM – MAX RPM | 1 | Minimum allowed speed |
| 5 | Password | 0 – 32767 | 1 | 9788 = password for changing parameters 10000 = password for saving changes |
| 6 | Control mode | 0/2 | 1 | 0 = 0-10V control 2 = Modbus control |
| 7 | Modbus address | 1 – 247 | 1 | Address in Modbus grid |
| 8 | Communication loss reaction | 0/1 | 1 | 0 = motor stop when Modbus communication lost 1 = ignore |
| 11 | AN1 MAX | 0 – 1000 | 0,01V | Control input voltage for maximum setpoint; operation reverse if AN1 MAX < AN1 MIN |
| 12 | AN1 MIN | 0 – 1000 | 0,01V | Control input voltage for minimum setpoint |
| 13 | AN1 STOP | 0 – 1000 | 0,01V | Control input voltage for stop |
| 18 | Baudrate | 0/1/2/3 | 1 | 1 = 9600 2 = 19200 3 = 38400 |
Table 7 – available Holding Registers – 0.17 / 0.37 / 0.75kW drives
| Input registers – read | ||||
| Address | Function | Range | Resolution | Remarks |
| 0 | HW version | 0 – 32767 | 1 | Hardware version |
| 1 | FW version | 0 – 32767 | 1 | Firmware version |
| 4 | Speed | 0 – 32767 | 1RPM | Actual motor speed |
| 5 | Temperature | -50 – 150 | 0,01°C | Controller temperature |
| 6 | DC voltage | 0 – 32767 | 0,1V | DC bus voltage |
| 7 | Current | 0 – 32767 | 0,001A | Motor current |
| 8 | Power | 0 – 32767 | 0,1W | Electrical power |
| 9 | AN | -300 – 2000 | 0,01V | Analog input voltage |
| 19 | Fault code | 0/1/2/3/4/ 5/6/7 |
1 |
Fault code (ordered by priority): 0 = normal operation 1 = standby 2 = overcurrent protection activated (If>4A) 3 = temperature protection activated (> 90°C speed is decreased, > 105°C motor stops) 4 = internal controller fault 5 = motor misconnected / faulty 6 = too low (<150V) or too high (>265V) supply voltage 7 = motor failed to start repeatedly |
| 23 | Operation minutes | 0 – 1440 | 1 | Minutes of operation |
| 24 | Operation days | 0 – 32767 | 1 | Days of operation (RPM > 0, no errors) |
Table 8 – available Input Registers – 0.17 / 0.37 / 0.75kW drives
4.2.2 Available Modbus registers – 1.5 / 2.4kW drives
| Input registers – read | ||||
| Address | Function | Range | Resolution | Remarks |
| 26883 | Status | 0 – 65535 | 1 | 1 in bit 0 means that the running test has passed |
| 26884 | Sequencer state | 0/1/2/3/4/ 5/6/7/8 | 1 | 0 = power on 1 = stop 2 = measuring offset current 3 = charging bootstrap capacitors 4 = motor running 5 = fault state |
| 6 = catch spin 7 = parking 8 = open loop acceleration |
||||
| 26885 | Modbus address | 0 – 255 | 1 | Address in Modbus grid |
| 26887 | Fault flag | 0 – 65535 | Odczyt bitowy 0 = PWM fault 1 = DC bus critical overvoltage 2 = DC bus overvoltage 3 = DC bus undervoltage 4 = PLL fault 5 = zero speed fault 6 = temperature too high 7 = locked rotor 10 = controller error 12 = parameter load fault 13 = communication fault |
|
| 26894 | Speed | 0 – 65535 | 1RPM | Actual motor speed |
| 26895 | Current | 0 – 65535 | 0,01A | Motor current |
| 26900 | DC voltage | 0 – 65535 | 1V | DC bus voltage |
| 26902 | IGBT
temperature |
-2000 –
2000 |
0,1°C | Transistor temperature |
| 26904 | Controller temperature | -2500 –
2500 |
0,1°C | Controller temperature |
| 26908 | Power on minutes | 0 – 59 | 1min | Minutes when controller was powered |
| 26909 | Power on hours | 0 – 65535 | 1h | Hours when controller was powered |
| 26917 | Rated speed | 0 – 65535 | 1RPM | Rated speed of a given drive model |
| 26918 | Work minutes | 0 – 59 | 1min | Minutes of operation |
| 26919 | Work hours | 0 – 65535 | 1h | Hours of operation |
Table 9 – available Input Registers – 1.5 / 2.4kW drives
| Holding Registers – read / write | ||||
| Address | Function | Range | Resolution | Remarks |
| 26627 | Baudrate | 9600 / 19200 | 1 | 9600 = baudrate 9600 19200 = baudrate 19200 |
| 26628 | Control mode | 0/1 | 1 | 0 = Modbus control 1 = 0-10V control |
| 26629 | Failsafe speed | 0 – MAX RPM | 1RPM | Motor target speed when in failsafe mode |
| 26630 | Fire speed | 0 – MAX RPM | 1RPM | Motor target speed when in fire mode |
| 26632 | MAX RPM | 0 – RATED RPM | 1RPM | Maximum allowed speed |
| 26641 | Communication loss alarm delay | 0 – 65000 | 0,01s | Time before communication alarm is activated |
| 26644 | Parity | 0/1/2 | 1 | 0 = no parity check 1 = odd 2 = even |
| 26645 | Stop bits | 1/2 | 1 | 1 = 1 stop bit 2 = 2 stop bits |
| 26648 | Setpoint | 10% RATED RPM – MAX RPM | 1RPM | Speed setpoint |
| 26653 | Communication alarm source | 0/1/2 | 1 | 0 = Modbus 1 = 0-10V 2 = none |
| 26662 | Alarm relay function | 0/1/2 | 1 | 0 = fault indication function 1 1 = running operation 2 = fault indication function 2 |
| 26668 | Failsafe voltage level | 0-100 | 0,1V | Control voltage level, below which alarm is activated when HR26653 = 1 |
| 26669 | Modbus address | 0-255 | 1 | Address in Modbus grid |
Table 10 – available Holding Registers – 1.5 / 2.4kW drives
4.3 0-10V
In addition to Modbus RTU, VTS EC drives have the ability to be controlled using 0-10V analog signal.
Terminals to which the control signal should be connected are indicated in 3.2 Pinout chapter.
One should also make sure that the drive control mode is set to 0-10V:
- 0.17 / 0.37 / 0.75kW: Holding Register 6 = 0
- 1.5 / 2.4kW: HR 26628 = 1
Adaptation of new EC drives to work with VTS automation
When ordering individual EC drives as spare parts, they will have the following settings:
| X | 0.17 / 0.37 / 0.75kW | 1.5 / 2.4kW |
| address | 1 | 129 |
| baudrate | 9600 | 19200 |
| parity control | none | even |
| stop bits | 1 | 1 |
Table 11 – default settings for EC drives ordered as spare parts
In order to adapt a new EC drive, ordered as a spare part, to work with a given air handling unit, the following are necessary:
-USB-RS485 converter (e.g. Ultima TRB-0611 or other based on FTDI chipset)
-power cable to the motor (L1+N+PE for 0.17 / 0.37 / 0.75kW (1-phase) drives; L1+L2+L3+PE (3-phase) for 1.5 / 2.4kW drives)
– Modbus master software (e.g. Modbus Poll)
Attention! VTS units are delivered with factory-adapted drives. The following steps only apply to drives ordered separately as spare parts.
After connecting the motor to the power supply and the converter, establish a connection with the motor in the Modbus Poll program in accordance with the default parameters presented in Table 11, and then, respectively:
- for 0.17 / 0.37 / 0.75kW (1-phase) drives:
➢ set Holding Register 5 to value 9788 (password for changing parameters)
➢ set HR 6 to 2 (control mode = Modbus)
➢ set HR 8 to 0 (communication loss reaction = motor stop)
➢ set HR 7 to the value corresponding to the drive address in the AHU – after this change, the connection with the drive should be re-established at the selected address with the following parameters: baudrate 9600, no parity check, 1 stop bit
➢ set HR 5 to 10000 (password for saving changes)
For 0.17 / 0.37 / 0.75kW (1-phase) drives there is also the possibility of adaptation using HMI Advanced (without using a converter). To do this, enter the old (default 1) and new (according to Table 5) address on the I15 mask and start the setting procedure by selecting the YES option. Note that only one drive should be powered up at a time during the procedure. - for 1.5 / 2.4kW (3-phase) drives:
➢ set Holding Register 26628 to value 0 (control mode = Modbus)
➢ set HR 26629 to 0 (failsafe speed = 0)
➢ set HR 26653 to 0 (communication alarm source = Modbus)
➢ set HR 26627 to 9600 (baudrate = 9600) – after this change, the connection with the drive should be re-established at address 129 with the following parameters: baudrate 9600, even parity, 1 stop bit
➢ set HR 26644 to 0 (no parity check) – after this change, the connection with the drive should be re-established at address 129 with the following parameters: baudrate 9600, no parity check, 1 stop bit
➢ set HR 26669 to the value corresponding to the drive address in the AHU
Documents / Resources
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VTS v1.2 11.2023 Ec Drives In Vts Devices [pdf] User Manual v1.2 11.2023 Ec Drives In Vts Devices, v1.2 11.2023, Ec Drives In Vts Devices, In Vts Devices, Devices |
