Kohler CURTIS 3150R, Manual

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3 — INSTALLATION, WIRING AND CONFIGURATION pg. 17
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Curtis Model 3150R – Oct. 2022
OPERATING CURRENT
The operating current depends upon the B+ voltage and whether the LCD heater is enabled:
B+ Voltage
LCD Heater
Disabled
LCD Heater
Enabled
9V 100mA 350mA
12V 72mA 390mA
24V 36mA 200mA
36V 25mA 140mA
48V 20mA 100mA
60V 16mA 80mA
Note: The
LCD Heater Enable parameter enables the heater.
I/Os
The following topics describe how to connect and configure the I/Os.
Battery Connections
Connect the battery to the B− and B+ inputs (pins 3 and 4). Curtis recommends that you include a
fuse in the circuit that connects the battery to the B+ input, as shown in Figure 3-2 . The fuse protects
the power system from external shorts. Size the fuse according to the application’s requirements.
Keyswitch Input
Connect a keyswitch to the keyswitch (pin 7) and B+ inputs. The operating voltage is the same as the
device’s operating voltage . The input is active high when switched to B+.
Switch Inputs
Model 3150R provides up to three switch inputs. Some models use pins 5–6 as the Switch 1 and
Switch 2 inputs, while other models use pins 5–6 as a serial port.
All models include the Switch 3 input (pin 8). Pin 8 can also be used as a lift lockout output. To
configure pin 8 as the Switch 3 input, set the 32 bit CAN object
0x6709:05
to 1.
The switch inputs are active high when switched to B+. The inputs’ operating voltages are the same
as the device’s operating voltage. The following table describes the switch input specifications:
Specification Minimum Maximum
Input Active High Threshold Voltage 6.0V The maximum B+ voltage
Input Impedance 148kΩ 152kΩ