Blocking Drive Outputs (Baseblock Commands) - YASKAWA G7 Series Technical Manual

Blocking Drive Outputs (Baseblock Commands)

Set 8 or 9 (Baseblock command NO/NC) in one of the parameters H1-01 to H1-10 (multi-function contact
input terminal S3 to S12 function selection) to perform baseblock commands using the terminal's ON/OFF
operation, and prohibit Drive output using the baseblock commands.
Clear the baseblock command to restart the operating using speed search from frequency references from the
previous baseblock command input.
Multi-function Contact Inputs (H1-01 to H1-10)
Setting
Value
8 External baseblock NO (NO contact: Baseblock at ON)
9 External baseblock NC (NC contact: Baseblock at OFF)
Time Chart
The time chart when using baseblock commands is shown below.
Forward operation/Stop
Baseblock command
Frequency reference
IMPORTANT
-70
6
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Output frequency
Fig 6.48 Baseblock Commands
If using baseblock commands with a variable load, do not frequently input baseblock commands during oper-
ation, as this may cause the motor to suddenly start coasting, and may result in the motor falling or slipping.
Function
Input
Cleared
Search from stored frequency reference
Coast to a stop
Control Methods
Open Open
V/f
Loop Flux Loop
V/f with
Vector Vector Vector
PG
1 2
Yes Yes Yes Yes Yes
Yes Yes Yes Yes Yes