Invertek Drives Optidrive ODP-2 User Manual

72 | Optidrive P2 User Guide | Version 3.00 www.invertekdrives.com
10.4. Derating Information
Derating of the drive maximum continuous output current capacity is require when:
Operating at ambient temperature in excess of 40°C / 104°F for enclosed drives (non UL approved).
Operating at Altitude in excess of 1000m/ 3281 ft.
Operation with Effective Switching Frequency higher than the minimum setting.
The following derating factors should be applied when operating drives outside of these conditions.
10.4.1. Derating for Ambient Temperature
Enclosure Type Maximum Temperature
Without Derating
(UL Approved)
Derate by Maximum Permissible Operating
Ambient Temperature with
Derating (Non UL Approved)
IP20 50°C / 122°F N/A 50°C
IP55 40°C / 104°F 1.5% per °C (1.8°F) 50°C
IP66 40°C / 104°F 2.5% per °C (1.8°F) 50°C
10.4.2. Derating for Altitude
Enclosure Type
Maximum Altitude
Without Derating
Derate by
Maximum
Permssable (UL
Approved)
Maximum
Permssable (Non-UL
Approved)
IP20 1000m / 3281ft 1% per 100m / 328 ft 2000m / 6562 ft 4000m / 13123 ft
IP55 1000m / 3281ft 1% per 100m / 328 ft 2000m / 6562 ft 4000m / 13123 ft
IP66 1000m / 3281ft 1% per 100m / 328 ft 2000m / 6562 ft 4000m / 13123 ft
10.4.3. Derating for Swicthing Frequency
Enclosure
Type
Switching Frequency (Where available)
4kHz 8kHz 12kHz 16kHz 24kHz 32kHz
IP20 N/A N/A 20% 30% 40% 50%
IP55 N/A 10% 10% 15 % 25% N/A
IP66 N/A 10% 25% 35% 50% 50%
10.4.4. Example of applying Derating Factors
A 4kW, IP66 drive is to be used at an altitude of 2000 metres above sea level, with 12kHz switching frequency and 45°C ambient
temperature.
From the table above, we can see that the rated current of the drive is 9.5 Amps at 40°C,
Firstly, apply the switching frequency derating, 12kHz, 25% derating
9.5 Amps x 75% = 7.1 Amps
Now, apply the derating for higher ambient temperature, 2.5% per °C above 40°C = 5 x 2.5% = 12.5%
7.1 Amps x 87.5% = 6.2 Amps
Now apply the derating for altitude above 1000 metres, 1% per 100m above 1000m = 10 x 1% = 10%
7.9 Amps x 90% = 5.5 Amps continuous current available.
If the required motor current exceeds this level, it will be necessary to either:
Reduce the switching frequency selected.
Use a higher power rated drive and repeat the calculation to ensure sufficient output current is available.
10.5. Internal EMC Filter and Varistors – Disconnection Procedure
10.5.1. IP20 Drive Models
All Optidrive P2 models provide a simple method to disconnect the internal EMC filter and surge protection varistors by fully removing
the screws shown below. This should only be carried out where necessary, for example in cases such as IT or ungrounded supplies,
where the phase to ground voltage can exceed the phase to phase voltage.
The EMC filter disconnect screw is labelled “EMC“.
The surge protection varistors disconnect screw is clearly labelled “VAR”.
10
Technical Data

Invertek Drives Optidrive ODP-2 Specifications

General

Brand	Invertek Drives
Model	Optidrive ODP-2
Category	Inverter
Language	English