Curtis 3301T, Руководство пользователя

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3 — INSTALLATION AND WIRING pg. 27
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Curtis Model 3301T Digital Instrumentation – September 2021
BATTERY CONNECTIONS
Connect the battery to the B+ and B– inputs (pins 16 and 15). Curtis recommends that you
include a fuse in the circuit that connects the battery to the B+ input, as shown in Figure 7 . The
fuse will protect the power system from external shorts and should be sized according to your
application’s requirements.
KEYSWITCH
The keyswitch input (pin 7) is active high. Connect the keyswitch input to B+ via a keyswitch.
SWITCH 1–5 INPUTS
The switch 1–5 inputs can be configured for various functions. The following table lists the inputs’
pins, functions, and the parameters used to configure the functions:
Switch
Input
Pin Switch
Traction
Fault Code
Hydraulic
Fault Code
Analog Frequency Driver Parameter
1 5 x x x Sender 1 Type
2 13 x x x Sender 2 Type
3 6 x x x Sender 3 Type
4 14 x x x Sender 4 Type
5 8 x x Output Mode
Note: The analog and frequency functions are reserved.
The following sections describe these inputs.
Switch Inputs
The switch 1–4 inputs can be configured as active high (switched to B+) or active low (switched to
B–). Switch input 5 is active high. The switches’ statuses can be used to turn signal icons on or off.
The voltage range of the switch inputs is identical to the B+ operating voltage range. The input signals
must be within the range of threshold voltages listed in the following table:
Threshold Minimum Maximum
Active high 4.0V Maximum B+ voltage
Active low N/A 1.0V