Johnson Controls VS3 Series User Manual

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Appendix A—Description of parameters
VARIABLE SPEED DRIVE SERIES III LIT-12012999—June 2018 www.johnsoncontrols.com
Code Modbus ID Parameter Application RO/RW
P6.1.12 318 Underload Fnom Torque 1,2,3 RW
This parameter gives the value for the minimum torque allowed when the output frequency is at or
above the field weakening point. If you change Para ID486, nominal motor current, this parameter is
automatically restored to the default value.
Figure 66. Setting of minimum load
Torque
P9.16
P9.17
Underload Area
Field Weakening
Point P8.4
5 Hz
f
P6.1.13 319 Underload F0 Torque 1,2,3 RW
This parameter gives value for the minimum torque allowed at zero frequency.
If you change the value of Para ID486, nominal motor current, this parameter is automatically restored to
the default value.
P6.1.14 320 Underload Time Limit 1,2,3 RW
This is the maximum time allowed in an underload contion. An internal up/down counter counts the
accumulated underload time. If the underload counter value goes above this limit, the protection will
cause a trip according to Para ID317. If the drive is stopped, the underload counter is reset to zero.
Figure 67. Underload time counter function
Underload
Time Counter
Trip Area
Underload
No Underload
Time
Trip/ Warning
P0.15
P6.1.15 333 Thermistor Fault Response 1,2,3 RW
This parameter is used to define the device reaction after a “Thermistor Fault Motor” condition occurs.
This failure could be device dependent.
0 = No response
1 = Warning
2 = Fault, stop mode after fault according to standard stop mode.
3 = Fault, stop mode after fault always by coasting

Johnson Controls VS3 Series Specifications

General

Brand	Johnson Controls
Model	VS3 Series
Category	Inverter
Language	English