A-8
Curtis 1228 Manual, Rev. F
APPENDIX A: EMC & ESD DESIGN CONSIDERATIONS
APPENDIX E
SPECIFICATIONS
NOMINAL
VOLTAGE UNDER- OVER-
BATTERY 15 SEC 1 MIN 1 HOUR DROP VOLTAGE VOLTAGE
MODEL VOLTAGE RATING RATING RATING @ 20 AMPS CUTBACK CUTOFF
NUMBER (volts) (amps) (amps) (amps) (volts) (volts) (volts)
1228-24XX 24 70 70 * 35 0.45 17 36
1228-25XX 24 90 90 * 40 0.15 17 36
1228-29XX 24 110 110 * 40 0.15 17 36
1228-34XX 36 70 70 * 35 0.30 26 48
* Actual value of 1-minute rating depends on MOSFET heating.
Table E-1 SPECIFICATIONS: 1228 CONTROLLER
Nominal input voltage 24 V and 36 V
PWM operating frequency 15 kHz
Dielectric resistance >1 M
Ω (DC test)
Minimum motor resistance 200 mΩ (70 amp models); 130 mΩ (90 and 110 amp models)
B+, B- logic pin current (max.) 9 A (pins 1, 2 and 10, 11 on 18-pin connector)
KSI input current (typical) 50 mA without programmer; 150 mA with programmer
KSI input current (peak) 1.5 A
Logic input current (typical) 1 mA at 24 V
Horn output current (max.) 15 mA
BDI output voltage and current (max.) 0–5 V, 2 mA
LED output current (max.) 15 mA
Electromagnetic brake coil resistance 32–200 Ω
Electromagnetic brake current (max.) 1 A
Control input switch type on/off
Speed control signal 3-wire, 5kΩ; or 0–5V
Speed control type single-ended, inverted single-ended, wigwag, or inverted wigwag
Operating ambient temperature range -25°C to 45°C (-13°F to 113°F)
Storage ambient temperature range -40°C to 75°C (-40°F to 167°F)
Heatsink overtemperature cutback
linear cutback starts at 92°C (198°F); complete cutoff at 134°C (273°F)
Heatsink undertemperature cutback 50% armature current at -25°C (-13°F)
Package environmental rating IP40
Weight 0.6 kg (1.3 lb)
Dimensions (L×W×H) 156 × 91 × 43 mm (6.13" × 3.60" × 1.71")
Regulatory compliance Designed to ANSI RESNA WC 14/21, ISO 7176-14, ISO 7176-21,
and EN 12184.
Documentation available to support 510K FDA filings.
APPENDIX E: SPECIFICATIONS
E-1
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