Curtis Instruments 1351 - Protected Voltages; Table 3: Low Current Connections Protected Voltage

2 — INSTALLATION SPECIFICATIONS AND WIRING
Curtis Model 1351 – December 2018
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pg. 12
Protected Voltages
e low-power pins’ protected voltage ratings listed in Table 3 are absolute—they are not for normal
operation. To prevent damage to the controller, do not connect (short circuit) the I/O Ground (pin 8)
to battery positive.
Table 3 Low Current Connections Protected Voltages
Controller Pin Number
Minimum
(reverse) Voltage
Maximum
Voltage
ESD
Air Discharge CONTACT
All other pins −1
MaxV + 10V
±15kV ±8kV
7 (KSI) −MaxV
11, 12 (Coil Return/Safety Output) −MaxV
8 (I/O Ground) Not protected
Pin Driver Output Digital Input
Analog Input
(Range)
Special or
Dedicated Usage
Related VCL*
Function References
33 PWM Driver 10 Switch Input 10
Automate_Driver( )
Put_Driver( )
Driver_10_PWM
Driver_10_Current
Switch_10
CSS/1313 HHP Programmer:
Configuration\Outputs\PWM Drivers\Driver10
Configuration\Inputs\Switches\SW 10
34 Digital Out 3 Switch input 12
Automate_Driver( )
Put_Driver( )
Digital_Output_3_
State
Switch_12
CSS/1313 HHP Programmer:
Configuration\Outputs\Digital Drivers
Configuration\Inputs\Switches
35 HB Driver 2
Automate_Driver( )
Put_Driver( )
Driver_12_PWM
Driver_12_Current
CSS/1313 HHP Programmer:
Configuration\Outputs\Half-Bridge Drivers
Table 2 Low Current Connections, cont’d
* The related VCL columns are applicable when employing VCL. Use the VCL “functions” to access the various I/O features. VCL “references” are
predefined names for specific pins and use in the CSS/1313-HHP Monitor app. References are read-only Monitor variables. Refer to the OS SysInfo file
for specific VCL functions, constants, controller system variables, usage, and CAN Object IDs.