Hitachi Drives Frequently Asked Questions
Question
On the SJ100/L100 when I run multi-speeds, do I need to set A20?
Answer
A20 can be considered multi-speed 0, If A01 is set to 02 (internal parameter) the frequency setting will be reached at the initialization of the run enable. E.G. I want the drive to hit 50Hz as soon as the fwd terminal is closed and all other multi-speed terminals are open.If A01 is set to 01 (terminal) A20 becomes invisible. The first multi-speed will be reached after the fwd is enabled and the terminal assigned to Multi-speed 01 is closed. E.G. I want the drive to be at 0Hz when the fwd terminal is closed and all the other terminals are open. I want the drive to hit 50Hz when both fwd and terminal (multi-speed 1) are closed and all the other terminals are open.
Another look:
Reaction:
o Drive to X Hz at run enable.
Settings:
o A01
o A20
o A02
Inputs:
o Run enable on local Keypad or Run terminal
Reaction:
o Drive to 0 Hz at run enable
o Drive to X Hz at Multi-speed 1 enable
Settings:
o A01
o A20
o A21
o A02
Inputs:
o Run enable from run terminal
o Multi-speed enable from multi-speed terminal
FAQ Subcategory: None
This item was last updated on 2001-08-23
Document ID: 803
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