5.Description of Function Codes
EM15 User's Manual
64
Ten's digit: VDI2 0, 1 (same as VDI1)
Hundred's digit: VDI3. 0, 1 (same as VDI1)
Thousand's digit: VDI4. 0, 1 (same as VDI1)
Ten thousand's digit: VDI5. 0, 1 (same as VDI1)
Different from DI terminals, VDI state can be set in two modes, selected in b7-05:
⚫
For example 1:Decided by state of VDOx
Whether the state of VDI is valid or not, that is determined by the state of the corresponding VDO. VDI x is uniquely
bound to VDO x (x is one of 1~5). For example, to implement the function that the frequency inverter reports an
alarm and stops when the AI1 input exceeds the limit, perform the following setting:
1.
Set VDI1 with function 44 "User-defined fault 1" (b7-00 = 44).
2.
VDI1 terminal valid is decided by state of VDO1 (b7-05= xxx0).
3.
Set VDO1 with function "AI1 input limit exceeded" (b7-11 = 31).
When the AI1 input exceeds the limit, VDO1 becomes ON. At this moment, VDI1 becomes ON and the frequency
inverter receives you-defined fault 1. Then the frequency inverter reports Err27 and stops.
⚫
Example 2: Decided by b7-06
The VDI state is determined by b7-06. For example, to implement the function that the frequency inverter
automatically enters the running state after power-on, perform the following setting:
1.
Set VDI1 with function 1 "Forward RUN (FWD)" (b7-00 = 1).
2.
Set b7-05 to xxx1: The state of VDI1 is decided by b7-06.
3.
Set b7-06 to xxx1: VDI1 is valid.
4.
Set b0-02 to 1: The command source to terminal control.
5.
Set b2-32 to 0: Startup protection is not enabled.
When the frequency inverter completes initialization after power-on, it detects that VDI1 is valid and VDI1 is set
with the function of forward RUN. That is, the frequency inverter receives the forward RUN command from the
terminal. Therefore, the frequency inverter starts to run in forward direction.
b7-07
Function selection for AI1 used as DI
Default
0
Setting Range
0~49
b7-08
Function selection for AI2 used as DI
Default
0
Setting Range
0~49
b7-09
Function selection for AI3 used as DI
Default
0
Setting Range
0~49
b7-10
Valid state selection for AI used as DI
Default
000
Setting
Range
Unit's digit: AI1..
0
High level valid
1
Low level valid
Ten's digit: AI2. 0, 1 (same as unit's digit)
Hundred's digit: AI3.0, 1 (same as unit's digit)
The functions of these parameters are to use AI as DI. When AI is used as DI, the AI state is high level if the AI input
voltage is 7 V or higher and is low level if the AI input voltage is 3 V or lower.
If the AI input voltage is between 3 V and 7 V,the AI state is hysteresis. And then b7-10 is used to determine whether
high level valid or low level valid when AI is used as DI.
