Curtis 1236SE User Manual

22
Curtis 1232E/34E/36E/38E & 1232SE/34SE/36SE Manual, os 30
24 NOVEMBER 2015
2 — INSTALLATION & WIRING: I/O Signal Specifications
KSI and coil return
KSI input provides power for all low power control circuits, power capacitor
precharge (before main contactor turn on), power supply outputs, and high
power output drivers. Battery voltage is sensed on the input for the VCL battery
discharge function.
Coil Return should be wired to the positive battery side of the contactors
being driven so that switching noise associated with PWM operation of the
contactors is localized to the contactor wiring only.
It is important to maintain the division between KSI and coil return
in order to ensure reverse polarity protection (vehicle wiring correct, battery
terminals reversed).
THROTTLE INPUT SPECIFICATIONS
operating
input s/sink protected esd
signal name pin voltage
impedance current voltage tolerance
 ThrottlePotHigh 15 0V(shorted  n/a 1mA - 0.5Vto ± 8kV
Pot2 High 27 to Pot Low) nominal (MaxV + 10 V) (direct strike)
5 V (open (source)
circuit)
Throttle Pot Wiper 16 0 to 6.25 V 100 kΩ min 0.76 mA
Pot2 Wiper 17 nominal
(source,
2-wire)
Pot Low 18 0 to 0.25 V 20 Ω nom. Faults if -1 V to
above (MaxV + 10 V)
15 mA
(sink)
13
24
1
23
35
12
KSI AND COIL RETURN INPUT SPECIFICATIONS
operating
input protected esd
signal name pin voltage
current voltage tolerance
KSI 1 Between under- 13 A max
*
 ±(MaxV+10V) ± 8kV
and overvoltage continuous (direct strike)
Coil Return 13
cutbacks
10 A or (KSI - 0.3V)to
12 A max ** (MaxV + 10 V)
* Including current from the coil return (pin 13).
** 12 A for 1236E/SE and 1238E; 10 A for 1232E/SE and 1234E/SE.
Throttle and brake inputs
e two pot inputs are independently programmable to allow use of a voltage
throttle or a 2-wire or 3-wire resistance throttle. Voltage throttles require only
the Pot Wiper input (with I/O Ground for the return line). Resistance throttles
require Pot Wiper and Pot Low (2-wire) or Pot High, Pot Wiper, and Pot Low
(3-wire). All throttle I/O is protected against shorts to B+ or B-.
Alternatively, these two inputs can be used for analog signals other than
the throttle and brake pot inputs. Configuring the inputs for use with other
signals requires VCL programming; see Section 8.

Curtis 1236SE Specifications

General

Brand	Curtis
Model	1236SE
Category	Controller
Language	English