Curtis 1298 Manual, OS 11
7
2 — INSTALLATION & WIRING: Low Current Connections
* The related VCL columns are vital when writing VCL code (see Section 7).
VCL “functions” are used to access the various I/Os; VCL “references” are
predefined names for specific pins.
Table 2 Low Current Connections
RELATED VCL
*
PIN NAME DESCRIPTION
FUNCTIONS REFERENCES
1 KSI Keyswitch input. Setup_BDI Keyswitch_Voltage
Provides logic power for
the controller and power
for the coil drivers.
2 Prop. Driver Proportional driver. Automate_PWM Sw_13
This is a coil driver with Put_PWM PWM5
current control capability PD_Current
typically used for a PD_Output
proportional valve on a PD_Throttle
hydraulic manifold. VCL_PD_Throttle
Can also be used as a
digital input.
3 Driver 4 Generic driver #4. Automate_PWM Sw_12
Typically used for the Put_PWM PWM4
load hold valve. Can PWM4_Output
also be used as a digital
input. Has low frequency
PWM capabilities.
4 Driver 3 Generic driver #3; can Automate_PWM Sw_11
also be used as a digital Put_PWM PWM3
input. Has low frequency PWM3_Output
PWM capabilities. Typically
used for pump contactor.
5 Driver 2 Generic driver #2; can Automate_PWM Sw_10
also be used as a digital Put_PWM PWM2
input. Has low frequency PWM2_Output
PWM capabilities and a
slightly higher current
rating.Typically used for
electromagnetic brake.
6 Driver 1 Generic driver #1; can Automate_PWM Sw_9
also be used as a digital Put_PWM PWM1
input. Has low frequency Set_Interlock PWM1_Output
PWM capabilities. Clear_Interlock Interlock_State
Typically used for main Main_State
contactor.
7 I/O Ground Input and output ground
reference.
8 Switch 2 Can be used as generic Sw_2
Analog 2 switch input #2 or as Analog2_Input
generic analog input #2.
Typically used as the
motor temperature
analog input.
9 Switch 3 Generic switch input #3. Sw_3
Typically used as the
interlock switch.
10 Switch 4 Generic switch input #4. Sw_4
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