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Curtis 1212S Manual, R ev. B
APPENDIX E
SPECIFICATIONS
APPENDIX E: SPECIFICATIONS
Table E-1 SPECIFICATIONS: 1212S CONTROLLER
Nominal input voltage 24 V, 36 V
Operating voltage 1212S-2xxx: 17 – 31 V; 1212S-3xxx: 25.5 – 46.5 V
PWM operating frequency 15.6 kHz
Electrical isolation to heatsink (min.) 500 V
KSI input current (max) 250 mA
Logic input current (max) 1 mA
+15V output current,
for programmer (max.) 60 mA
Minimum motor resistance 120 m
Ω
Lift Lockout output current (max.) 1.5 A
BDI output voltage, resistance (max.) 0 – 5 V, 10 k
Ω
EM brake coil resistance (min.) 20 Ω
Throttle type resistance or voltage;
single-ended or inverted single-ended
Storageambienttemperaturerange −40°Cto85°C
Operatingambienttemp.range −25°Cto50°C
Overvoltage cutoff 1212S-2xxx: 34 V; 1212S-3xxx: 51 V
Package environmental rating ISTA 2A; electronics sealed to IPX5
Weight 0.45 kg
Dimensions (W× L×H) 79 × 141 × 47.5 mm
Regulatory compliance EMC: EN12895:2000
UL List: UL583
Safety: EN13849-1(PL=B, Cat 2)
NOMINAL 20 SECOND 120 SECOND 1 HOUR PEAK MAX BOOST CURRENT
MODEL BATTERY VOLTAGE CURRENT RATING CURRENT RATING CURRENT RATING BOOST CURRENT DURATION
NUMBER (volts) (amps) (amps) (amps) (amps) (seconds)
1212S-25xx 24 90 50 30 100 5
1212S-26xx 24 110 (60 sec) 70 50 125 10
1212S-35xx 36 90 50 30 100 5
Note: All current ratings are rms values per motor phase. Internal algorithms automatically reduce maximum current limit when
heatsink temperature is >80°C or battery voltage is outside the allowed limits. Heatsink temperature is measured internally near the
power MOSFETs.
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