System air NOVA drive 370 Technical specifications

Systemair NOVA drive 370
Product Description

Product Desctription for Systemair NOVA drive 370
This system is designed and optimized to drive rotary heat exchangers. The system consist of a controller and 3 motor
models: 3Nm, 90 TYD-M-214, max shaft speed 250rpm. 6Nm, 120 TYD-M-214, max shaft speed 350rpm. 10Nm, 120
TYD-L-214, max shaft speed 350rpm. All have a minimum shaft speed of 0.2rpm. By external gear wheel it can run
exchangers from 0.02-20rpm. Control signal 0-10V (Modbus RTU) have an un-linear function to ensure a linear heat
transfer Extract/supply air. The system has a number of functions directed towards this type of application. Among
these, rotary guard function to check if exchanger is actually moving, purge function to ensure that the exchanger is
not getting full of particles when not in operation and many more described in this manual.

1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Environmental constraints . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 Mechanical and electrical installation . . . . . . . . . . . . . . . . . . 7
6 Motor parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
7 LED behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
8 Fault behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9 RHC features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
10 Modbus control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Contents

4| Systemair NOVA drive 370
1 Safety information
Before the installation and power supplying the drive, carefully read the instructions. The manufacturer is not responsi-
ble for incorrect installation and use of device. Please refer to section 6 for mechanical and electrical installation guide-
lines.
The appliance is intended to be installed only by a qualified person. Do not install or use a device which appears to be
damaged.
When connected to power the appliance must be grounded. Make sure the electrical installation on the rating plate
matches the power supply. Please refer to Table 2 for maximum fuse ratings and type.
CAUTION: Risk of hot surfaces and electric shock if the unit has been running! If service is required, please wait mini-
mum 5 minutes after power is disconnected before operating the unit.
2 Product description
Figure 1 – Illustration of the NOVA RHC 370 enclosure.
3 Environmental constraints
Storage Environment
Ambient temperature ºC -40°C to +70°C
Ambient humidity % RH 10% to 95% RH (Non condensing)
Altitude m0 to 2000 m
Working Environment
Ambient temperature ºC -40 ºC to +40 ºC
Ambient humidity % RH 10% to 95% RH (Non condensing)
Altitude m0 to 2000 m
Table 1: Environment

Systemair NOVA drive 370 |5
4 Technical data
Unit NOVA 370 (Item No. 90801116)
Overall ratings
Power level W50 - 450W
Motors used Inverter output power
90-TYD-S214-M W50 - 220 W
120-TYD-S214-M W50 - 370 W
120-TYD-S214-L W50 - 450 W
This configuration can only be used in professional equipment with a
total power greater than 1kW.
Efficiency %> 94%
@ 230VAC rms, 50Hz in; nominal power and current output; Ta 25°C
PFC strategy -Passive
Power factor @ max load Cos > 0.7
Ambient temperature ºC -40 to +40
Leakage current mA < 3.5
RCD Type A, B or F
Input supply (grid)
Nominal voltage Vrms 1 x 230 Vrms +10%/-20%
Supply connection -Single phase (phase-to-neutral or phase-to-phase) + earth/ground
Frequency Hz 50 Hz ±2 Hz
Max input current @ 230V supply Arms 3.6
External input fuse size Type MAX C16
Minimum supply without speed
reduction
Vrms 207
Minimum supply at reduced
speed
Vrms 184
Fuse -All inverters includes a PCB fuse on the input
EMC filter -Integrated
Inverter output
Maximum output current Arms 2.6
Maximum output frequency Hz 250 Hz (V/F mode)
Output voltage Vrms 0-230 Vrms (input supply dependent)
Motor type -Self – synchronous motor
Motor control
input reference
Minimum rpm 0.2
Maximum rpm 350
Motor control method -V/F control
Features -- V/F mode
- Minimum and maximum speed
- Ramping functions
- HMI (LED control, dip switches, power inputs, alarm relay)
- Fault management
- Analog control
- Modbus control
- Brake/hold function
- Scaled speed calculation
- Run data (counters, histograms, faults)

6| Systemair NOVA drive 370
Protection
Protection functions -Check Table 9
Module tem-
perature pro-
tection
Derate ºC 90 ºC
Shutdown 100 ºC
Circuit board
temperature
protection
(enclosed tem-
perature)
Derate ºC 75 ºC
Shutdown 80 ºC
Motor control method -V/F control
Output overcurrent shutdown (by
software)
Arms 3 Arms
Input over and under voltage Vrms 253 Vrms and 184 Vrms
Motor re-start -Restart on failure according to number of retries specified in Table 9
Control interface
Analog input Volt 0-10V, non-linear, incl start/stop hysteresis
Analog input impedance Ohm Approx. 15 kOhm
Digital input -1 x Digital input – Set Direction
1 x Digital input – Rotation sensor
Communication interface -1 x Modbus RTU (on RS485), 24V protected
Control interface alarm -1x Alarm relay NC/C/NO
Maximum: 2A/250Vac or 6A/24Vdc
Indicators -Red/Green/Yellow LED on the PCB, check Figure 6 for position
Settings -Dipswitch for Motor setting, reset and test function
Galvanic isolation -Reinforced Insulation
Auxiliary power supply
External auxiliary power supply V10 volt DC (@ input: 230 VAC +/-10%)
External auxiliary power supply mA Maximum 10mA
Enclosure
Material -Aluminium Alloy - No painting – Polymer cover (PC/ABS 5VA)
Mounting -4 x Ø5.5mm holes
Mounting direction -Vertical
Protection Ingress IP 54
Size L x W x
H
209x158x73 [mm]
Weight Kg 1.4
Connections -- Spring terminals for wires
- Bracket for Motor Cable shield
- Screw terminals for PE conductors
Cable fixing/fastening -Cable Glands
Cable glands -2 x M16
2 x M20
Service
Discharge time Minutes 5
Cooling time Minutes 5
Power-up Initialisation time Sec Max 12.5 s.
Table 2 – Product overview

Systemair NOVA drive 370 |7
5 Mechanical and electrical Installation
In this chapter the installation of the inverter is depicted, starting with mechanical installation guidelines including ori-
entation and mounting torque and finnishing with electrical installation guidelines. For the electrical installation, differ-
ent configurations are presented in details: such as connections in case of Analogue control or ModBus control.
5.1 Mechanical Installation
5.1.1 Drive mounting orientation
The drive mounting orientation shall be vertical, with the cable glands facing downwards. This is to ensure the best
thermal performance of the product. For reference, please refer to Figure 2.
Figure 2 – Mounting orientation of NOVA inverter family
5.1.2 Drive maximum mounting torque and allowed wire dimensions
A visual represenation of the mounting torque and allowed wires can be seen in Figure 3. Required tools for mounting
are presented in Table 3 together with the recommended torque.
Component Mouting tools Torque [Nm]
Motor cable shield PZ1 screwdriver 0.8 – 1.2
Earth connector PZ2 or Flat blade 6mm screwdriver 1.2
Top cover PZ2 or Flat blade 6mm screwdriver 0.8 – 1.2
Table 3 - Tools required for mounting and torque recommendation

8| Systemair NOVA drive 370
The connectors for the inverter come in 2 sizes. A larger one for the power (motor + supply) and alarm relay and small-
er ones for the signal wires. Detailed information regarding allowed wire termination or wire types can be seen in Table
4.
Connector Connection type Size
Motor (U,V,W);
Supply (N,L);
Alarm (NC, COM, NO)
Solid wire(1),(2) 0.2 – 4.0 mm2 (26 – 12 AWG)
Stranded wire(1) 0.2 – 2.5 mm2 (26 – 14 AWG)
Flat blade max. 3.5 mm
Analogue Control (0V, Uin, Uout);
Rotary Sensor (0V, RUN, DIR);
MODBUS (0V, B, A)
Solid wire(1) 0.2 – 1.5 mm2 (26 – 16 AWG)
Stranded wire(1) 0.2 – 1.5 mm2 (26 – 16 AWG)
Flat blade max. 2.5 mm
NOTE:
(1): Max length of wire strip is 9 – 10 mm.
(2): Solid wire connection not allowed for Motor Connector!
Table 4 – Connector connection types
Figure 3 – Drive mounting torque and allowed wire dimensions

Systemair NOVA drive 370 |9
5.2 Electrical Installation
When installing the product, means of power disconnection shall be incorporated in the fixed wiring in order to ensure
all pole disconnection from supply mains. A fuse shall be installed in front of the inverter, with the following character-
istic: max C16.
5.2.1 Earthing / Grounding
Ground the drive properly. Refer to Figure 5 for ground connector marked with PE for its placement. Use the mounting
torque specified in section 6.1. Do not rely only on the conduit connecting to the drive case as a replacement for a
ground wire. Do not ground one inverter to another in a ”daisy-chain” manner.
WARNING: Earthing/Grounding hazard
For the operator safety it is important to ground the drive properly and follow the provided grounding guidelines.
RCD compatibility
For extra safety protection a Residual Current Device (RCD) shall be used with the inverter, provided that the local safe-
ty regulations are complied with.
Leakage current in the inverter is measured to be less than 3.5mA therefore the following RCD types can be used: A, F
or B.
Power supply system
The device is designed to be operated in a TN earthing systems. It can be used in either of the TN-C, TN-C-S and TN-S
earthing systems. For a view over the allowed power supply systems refer to Figure 4.
Figure 4 – Power supply systems
TN – S TN – C – S TN – C
5.2.2 Overview of general electrical connections
A general diagram on how to connect NOVA RHC is depicted below. Detailed instructions are given below, in steps.

10 | Systemair NOVA drive 370
Analog control
The speed reference is given as 0-10V to the NOVA drive.
Modbus
As soon as a valid message is received trough Modbus, the NOVA drive will switch from analogue to Modbus commu-
nication and will continue operating in this manner until power is reset.
Enable rotary guard
To use the rotary guard, the sensor must be supplied with 10 V from Uout 10V and connected to ground, 0V. The out-
put from the sensor must be connected to RUN.
Disable rotary guard
If you do not wish to use the rotary guard feature, disable it by connecting the RUN terminal to Uout 10V. To re-enable
it you must power reset NOVA and connect according to described earlier.
DIR
RUN
0V
U out 10V
U in 0-10V
0V
Modbus
B
A
0V