Curtis 1356/1356P CAN Expansion Module Manual, Rev. A
9
Driver Outputs
Each of the two driver outputs (Output 1, 2) is capable of driving a closed-loop
current-controlled proportional valve or a voltage-controlled contactor. Each
driver has independent mode, max, and dither settings.
ese are high-power drivers. e internal impedance to ground will cause
leakage current to ow through the output even when the output driver is o.
is leakage current can be enough (>2 mA) to light high-eciency LEDs.
In the wiring diagram, the output at J1-2 is shown driving a proportional
valve coil. is driver is programmed for Constant Current mode and would
have some Dither applied.
e second output, at J1-12, is driving a basic contactor coil. is output
is in the Constant Voltage mode and can be set to run at a lower voltage than
the nominal battery voltage.
Switch Inputs
All the inputs are used as Active High inputs (“On” when connected to B+).
In the wiring diagram, Input 13 (J1-8) is shown as an Active High input
switching to B+.
(Note that when Input/Output 1 or 2 is used as a switch input, its Op-
eration Mode must be set to 0; see pages 33 and 45.)
Analog Inputs
Analog Input 3, at J1-21, is shown being used with an RTD. is requires
setting Analog Input 3’s Input Type parameter to 1 = Resistive input (see pag-
es34 and 43).
CAN Bus
e 1356 /1356P has an internal 1 kΩ bus termination resistor. is internal
impedance matches the system requirements for a mid-line connection or
short stub connection. e 1356 /1356P can communicate up to 1 Mbit/s on
a properly terminated/wired bus.
2 — INSTALLATION & WIRING: Standard Wiring Diagram
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