ATV21HD18N4
Product ID:33151
Updated: 2026/4/5
Key Features
- 1Deliver 18.5 kW motor power for efficient operation. 2、Control adjustable torque for precise application needs. 3、Protect with an open frame and IP20 rating. 4、Integrate Modbus communication for seamless connectivity. 5、Connect to 400/480VAC input for flexible installation.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Range of Product | Altivar 21 | Product or Component Type | Variable speed drive |
| Product destination | Asynchronous motors | Product Specific Application | Pumps and fans in HVAC |
| Assembly style | With heat sink | Component name | ATV21 |
| EMC filter | Class A EMC filter integrated | power supply voltage | 380...480 V - 15...10 % |
| Phase | 3 phase | Motor power kW | 18.5 kW |
| Maximum Horse Power Rating | 25 hp | Line current | 27.8 A 480 V<br />34.8 A 380 V |
| Speed range | 1…10 | Transient overtorque | 120 % of nominal motor torque +/- 10 % 60 s |
| Asynchronous motor control profile | Constant voltage/frequency ratio with automatic IR compensation<br />Quadratic voltage/frequency ratio<br />Current flux vector control (FVC) without speed feedback<br />Energy saving ratio<br />Constant voltage/frequency ratio | communication port protocol | Modbus |
| Type of polarization | No impedance | IP degree of protection | IP20 on upper part without blanking plate on cover EN/IEC 60529<br />IP20 on upper part without blanking plate on cover EN/IEC 61800-5-1<br />IP21 EN/IEC 60529<br />IP21 EN/IEC 61800-5-1<br />IP41 on upper part EN/IEC 60529<br />IP41 on upper part EN/IEC 61800-5-1 |
| Option card | Communication card APOGEE FLN<br />Communication card BACnet<br />Communication card LonWorks<br />Communication card METASYS N2 | power supply voltage limits | 323…528 V |
| power supply frequency | 50...60 Hz - 5...5 % | power supply frequency limits | 47.5…63 Hz |
| Apparent power | 28.2 kVA 380 V | maximum prospective line Isc | 22 kA |
| maximum continuous output current | 37 A 380 V<br />37 A 460 V | Maximum transient current | 40.7 A 60 s |
| Speed drive output frequency | 0.5…200 Hz | Nominal switching frequency | 8 kHz |
| Switching frequency | 6...16 kHz adjustable<br />8...16 kHz with derating factor | Speed accuracy | +/- 10 % of nominal slip 0.2 Tn to Tn |
| Torque accuracy | +/- 15 % | Regulation loop | Adjustable PI regulator |
| Motor slip compensation | Not available in voltage/frequency ratio motor control<br />Adjustable<br />Automatic whatever the load | diagnostic | for DC bus energized 1 LED (red) |
| Output voltage | <= power supply voltage | Insulation | Electrical between power and control |
| recommended type of cable for mounting in an enclosure | With UL Type 1 kit 3 UL 508 cable 104 °F (40 °C), copper 75 °C / PVC<br />Without mounting kit 1 IEC cable 113 °F (45 °C), copper 70 °C / PVC<br />Without mounting kit 1 IEC cable 113 °F (45 °C), copper 90 °C / XLPE/EPR | Electrical connection | VIA, VIB, FM, FLA, FLB, FLC, RY, RC, F, R, RES terminal 0.004 in² (2.5 mm²) / AWG 14<br />L1/R, L2/S, L3/T terminal 0.04 in² (25 mm²) / AWG 3 |
| Tightening torque | 5.3 lbf.in (0.6 N.m) VIA, VIB, FM, FLA, FLB, FLC, RY, RC, F, R, RES)<br />39.8 lbf.in (4.5 N.m), 40 lb.in L1/R, L2/S, L3/T) | Supply | Internal supply 24 V DC 21…27 V), <200 mA overload and short-circuit protection<br />Internal supply for reference potentiometer (1 to 10 kOhm) 10.5 V DC +/- 5 %, <10 mA overload and short-circuit protection |
| Analogue input number | 2 | Analogue input type | VIA switch-configurable current 0...20 mA 242 Ohm 11 bits<br />VIA switch-configurable voltage 0...10 V DC 24 V max 30000 Ohm 11 bits<br />VIB configurable PTC probe 0...6 probes 1500 Ohm<br />VIB configurable voltage 0...10 V DC 24 V max 30000 Ohm 11 bits |
| Sampling duration | F 2 ms +/- 0.5 ms discrete<br />R 2 ms +/- 0.5 ms discrete<br />RES 2 ms +/- 0.5 ms discrete<br />VIA 2 ms +/- 0.5 ms analog<br />VIB 2 ms +/- 0.5 ms analog | Response time | FLA, FLC 7 ms +/- 0.5 ms discrete<br />FLB, FLC 7 ms +/- 0.5 ms discrete<br />FM 2 ms +/- 0.5 ms analog<br />RY, RC 7 ms +/- 0.5 ms discrete |
| Accuracy | +/- 1 % FM) for a temperature variation 60 °C<br />+/- 0.6 % VIA) for a temperature variation 60 °C<br />+/- 0.6 % VIB) for a temperature variation 60 °C | Linearity error | FM +/- 0.2 % output<br />VIA +/- 0.15 % of maximum value input<br />VIB +/- 0.15 % of maximum value input |
| Analogue output number | 1 | Analogue output type | FM switch-configurable current 0...20 mA 500 Ohm 10 bits<br />FM switch-configurable voltage 0...10 V DC 470 Ohm 10 bits |
| Discrete output number | 2 | Discrete output type | Configurable relay logic FLA, FLC) NO - 100000 cycles<br />Configurable relay logic FLB, FLC) NC - 100000 cycles<br />Configurable relay logic RY, RC) NO - 100000 cycles |
| Minimum switching current | 3 mA 24 V DC configurable relay logic | Maximum switching current | 2 A 250 V AC inductive cos phi = 0.4 L/R = 7 ms FL, R)<br />2 A 30 V DC inductive cos phi = 0.4 L/R = 7 ms FL, R)<br />5 A 250 V AC resistive cos phi = 1 L/R = 0 ms FL, R)<br />5 A 30 V DC resistive cos phi = 1 L/R = 0 ms FL, R) |
| Discrete input type | F programmable 24 V DC level 1 PLC 3500 Ohm<br />R programmable 24 V DC level 1 PLC 3500 Ohm<br />RES programmable 24 V DC level 1 PLC 3500 Ohm | Discrete input logic | Negative logic (sink) F, R, RES), >= 16 V, <= 10 V<br />Positive logic (source) F, R, RES), <= 5 V, >= 11 V |
| Acceleration and deceleration ramps | Automatic based on the load<br />Linear adjustable separately from 0.01 to 3200 s | Braking to standstill | By DC injection |
| Protection type | Against input phase loss drive<br />Break on the control circuit drive<br />Input phase breaks drive<br />Line supply overvoltage and undervoltage drive<br />Line supply undervoltage drive<br />Overcurrent between output phases and earth drive<br />Overheating protection drive<br />Overvoltages on the DC bus drive<br />Short-circuit between motor phases drive<br />Thermal power stage drive<br />Motor phase break motor<br />Thermal protection motor<br />With PTC probes motor<br />Against exceeding limit speed drive | Insulation resistance | >= 1 mOhm 500 V DC for 1 minute |
| Frequency resolution | Analog input 0.024/50 Hz<br />Display unit 0.1 Hz | Connector Type | 1 RJ45 |
| Physical interface | 2-wire RS 485 | Transmission frame | RTU |
| Transmission Rate | 9600 bps or 19200 bps | Data format | 8 bits, 1 stop, odd even or no configurable parity |
| Number of addresses | 1…247 | Communication Service | Read device identification (43)<br />Time out setting from 0.1 to 100 s<br />Monitoring inhibitable<br />Write multiple registers (16) 2 words maximum<br />Read holding registers (03) 2 words maximum<br />Write single register (06) |
| marking | CE | Operating position | Vertical +/- 10 degree |
| Height | 13.0 in (329.5 mm) | Width | 9.6 in (245 mm) |
| Depth | 7.5 in (190 mm) | Net Weight | 25.68 lb(US) (11.65 kg) |
| Noise level | 54 dB 86/188/EEC | Dielectric strength | 3535 V DC between earth and power terminals<br />5092 V DC between control and power terminals |
| Electromagnetic compatibility | 1.2/50 µs - 8/20 µs surge immunity test level 3 IEC 61000-4-5<br />Conducted radio-frequency immunity test level 3 IEC 61000-4-6<br />Electrical fast transient/burst immunity test level 4 IEC 61000-4-4<br />Electrostatic discharge immunity test level 3 IEC 61000-4-2<br />Radiated radio-frequency electromagnetic field immunity test level 3 IEC 61000-4-3<br />Voltage dips and interruptions immunity test IEC 61000-4-11 | Standards | IEC 61800-3 environments 1 category C3<br />IEC 61800-3<br />IEC 61800-3 environments 1 category C1<br />UL Type 1<br />IEC 61800-3 environments 1 category C2<br />EN 61800-3 category C3<br />IEC 61800-3 environments 2 category C3<br />EN 61800-3 environments 1 category C2<br />EN 55011 class A group 1<br />EN 61800-3 environments 2 category C1<br />EN 61800-3<br />EN 61800-5-1<br />IEC 61800-3 category C2<br />IEC 61800-3 environments 2 category C2<br />IEC 61800-3 category C3<br />EN 61800-3 category C2<br />IEC 61800-5-1<br />IEC 61800-3 environments 2 category C1<br />EN 61800-3 environments 1 category C1<br />EN 61800-3 environments 1 category C3<br />EN 61800-3 environments 2 category C2<br />EN 61800-3 environments 2 category C3 |
| Product Certifications | NOM 117<br />UL<br />CSA<br />C-tick | Vibration resistance | 1 gn 13…200 Hz)EN/IEC 60068-2-8<br />1.5 mm 3…13 Hz)EN/IEC 60068-2-6 |
| Shock resistance | 15 gn 11 ms IEC 60068-2-27 | Pollution degree | 2 IEC 61800-5-1 |
| Environmental characteristic | Classes 3C1 IEC 60721-3-3<br />Classes 3S2 IEC 60721-3-3 | Relative humidity | 5…95 % without condensation IEC 60068-2-3<br />5…95 % without dripping water IEC 60068-2-3 |
| Ambient air temperature for operation | 14…104 °F (-10…40 °C) without derating)<br />104…122 °F (40…50 °C) with derating factor) | Ambient Air Temperature for Storage | -13…158 °F (-25…70 °C) |
| Operating altitude | <= 6561.68 ft (2000 m)<br />3280.84...9842.52 ft (1000...3000 m) limited to 2000 m for the Corner Grounded distribution network |
Specifications may be subject to change without notice