Curtis 1222 Manual, os 15
2 9 J A N U A R Y 2 0 1 3
APPENDIX D
SPECIFICATIONS
APPENDIX D: SPECIFICATIONS
D-1
Table D-1 SPECIFICATIONS: 1222 CONTROLLERS
Nominal input voltage 24 – 48 V
PWM operating frequency 16 kHz
Maximum encoder frequency 10 kHz
Maximum controller output frequency 200 Hz
Electrical isolation to heatsink 500 V (minimum)
Storage ambient temperature range -40°C to 95°C (-40°F to 203°F)
Operating ambient temperature range -40°C to 50°C (-40°F to 122°F)
Internal heatsink operating temp. range -40°C to 95°C (-40°F to 203°F)
Package environmental rating IP65 per IEC 529
(Note: Compliance requires AMPSEAL 35-pin connector header)
Weight 1.3 kg (3.0 lbs)
Dimensions, W
× L×H 146 × 164 × 60 mm (5.7" × 6.5" × 2.3")
EMC Designed to the requirements of EN 12895
Safety Designed to the requirements of:
EN 1175-1:1998+A1:2010
ISO 13849-1:2006 (EN 13849-1:2008)
UL UL recognized component per UL583
Note: Regulatory compliance of the complete vehicle system
with the controller installed is the responsibility of the vehicle OEM.
NOMINAL 2 MIN CONTINUOUS LIFETIME
MODEL BATTERY VOLTAGE RATING RATING RATING
NUMBER (volts) (amps) (amps) (hours)
1222-51XX 24 – 48 70 40 20,000
Notes: All current ratings are rms values per motor phase. Internal algorithms automatically reduce maximum current limit when
heatsink temperature is >85°C or battery voltage is outside the allowed limits. Heatsink temperature is measured internally
near the power MOSFETs.
The 2-minute rating is based on an initial controller heatsink temperature of 25°C and a maximum heatsink temperature
of 85°C. No additional external heatsink is used for the 2-minute rating test.
Operation at or below the continuous rating is required to achieve the lifetime rating.
Ratings are based on the more conservative result of an airflow test and a power capacitor lifetime calculation. For the airflow test,
the controller is mounted on a 6mm thick square steel plate (0.25m
2
) in a 6km/hr airflow at 25°C temperature. Rated current is when
the controller baseplate temperature reaches 85°C (thermal cutback). The capacitor lifetime calculation assumes internal controller
temperature = 70°C (same as baseplate temperature), modulation index = 60%, and power factor = 0.866.
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