Curtis 1253 Manual, Rev. F
APPENDIX C
SPECIFICATIONS
NOMINAL ARMATURE
KSI PROGRAMMABLE
BATTERY CURRENT INPUT UNDERVOLTAGE OVERVOLTAGE
MODEL VOLTAGE LIMIT VOLTAGE CUTBACK CUTOFF
NUMBER (volts) (amps) (volts) (volts) (volts)
1253-48XX 48 600 28–60 32–42 60
1253-80XX 80 600 47–102 54–70 102
Table C-1 SPECIFICATIONS: 1253 CONTROLLER
Nominal input voltage 48 V and 80 V
PWM operating frequency 15.6 kHz
Electrical isolation to heatsink 500 V ac (minimum)
KSI input voltage 28 V (minimum) for 48V model; 47 V (minimum) for 80V model
KSI input current (no contactors engaged) <60 mA without 1311 programmer; <130 mA with 1311 programmer
Logic input voltage see below
Logic input current <1 mA
Contactor driver output current 1 A (maximum)
Status LED output current 5 mA (maximum)
Operating ambient temperature range -40°C to 50°C (-40°F to 122°F)
Storage ambient temperature range -40°C to 85°C (-40°F to 185°F)
Heatsink overtemperature cutback linear cutback starts at 80°C (176°F); complete cutoff at 120°C (248°F)
Heatsink undertemperature cutback 50% current below -25°C (-13°F)
Package environmental rating IP54
Weight 2.6 kg (5.7 lb)
Dimensions (L×W×H) 196 × 146 × 77 mm (7.7" × 5.7" × 3.0")
APPENDIX C: SPECIFICATIONS
C-1
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