Input Terminal Functions
Input Terminal Functions
The digital multifunction inputs can be set for several functions using the H1-01 to H1-05 parameters (terminal S3 to S7 function selection). These following section describes the input functions not mentioned in any other section.
Related Parameters
Parameter
No.
H1-01
H1-02
H1-03
H1-04
H1-05
Name
Terminal S3 function selection
Terminal S4 function selection
Terminal S5 function selection
Terminal S6 function selection
Terminal S7 function selection
80
84
81
83
F
Factory
Setting
Change during
Operation
No
No
No
No
No
Control Methods
V/f
Open
Loop
Vector
Closed
Loop
Vector
A A A
A
A
A
A
A
A
A
A
A
A
A
A
Blocking Inverter Outputs (Hardware Baseblock)
Using a baseblock command the inverter output can be cut immediately. When baseblock is activated the power supply of the IGBT driver circuit is cut off. In this case the motor will start coasting. If the baseblock command is cleared, the inverter output operation is resumed.
To use the baseblock function one of the digital input S8 must be used. The input is a NC input, i.e. if terminal
S8 is open, the inverter is baseblocked.
5
Stopping the Inverter on External Device Errors (External Error Function)
The external error function activates the error contact output and stops the Inverter operation. Using this function the inverter operation can be stopped on peripheral devices break down or other errors. The digital operator will display EFx (External error [input terminal Sx]). The x in EFx shows the number of the terminal at which the external error signal is input. For example, if an external error signal is input to terminal S3, EF3 will be displayed.
To use the external error function, set one of the values 20 to 2F in one of the parameters H1-01 to H1-05 (digital input terminal S3 to S7 function selection).
Select the value to be set in H1-01 to H1-05 from a combination of any of the following three conditions.
•
Signal input level from peripheral devices
•
•
External error detection method
Operation after external error detection
5-
43
5-
44
The following table shows the relationship between the external fault conditions and the set value in H1-.
Set
Value
2C
2D
2E
2F
28
29
2A
2B
24
25
26
27
20
21
22
23
Input Level
(See Note 1.)
NO Contact
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
NC Contact
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Error Detection Method
(See Note 2.)
Constant
Detection
Detection
During Operation
Yes
Decelerate to
Stop (Error)
Coast to Stop
(Error)
Yes
Operation During Error Detection
Emergency
Stop (Error)
Continue
Operation
(Warning)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes Yes
1. Sets the input level at which errors are detected. (NO contact: External error when ON; NC contact: External error when OFF).
2. Set the detection method to detect errors using either constant detection or detection during operation.
Constant detection: Detects while power is supplied to the Inverter.
Detection during operation: Detects only during Inverter operation.
Using the Timer Function
The multi-function digital input terminals S3 to S7 can be used as timer function input terminals, and multifunction output terminals M1-M2, M3-M4, and M5-M6 can be used as timer function output terminals. By setting the delay time, you can prevent chattering of the sensors and switches.
•
•
Set one of the parameters H1-01 to H1-05 (digital input terminal S3 to S7) to 18 (timer function input).
Set H2-01 to H2-03 (multi-function output terminals M1-M2, M3-M4, and M5-M6 function selection) to
12 (timer function output).
Related Parameters
Parameter
No.
Name b4-01 b4-02
Timer function ON-delay time
Timer function OFF-delay time
Factory
Setting
Change during
Operation
0.0 s
0.0 s
No
No
V/f
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
A
Input Terminal Functions
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
Function
18 Timer function input
Multifunction Outputs (H2-01 to H2-03)
Set
Value
12
Function
Timer function output
V/f
Yes
Control Methods
Open
Loop
Vector
Yes
Closed
Loop
Vector
Yes
V/f
Yes
Control Methods
Open
Loop
Vector
Yes
Closed
Loop
Vector
Yes
Setting Example
When the timer function input ON time is longer than the value set in b4-01, the timer output function is turned ON. When the timer function input OFF time is longer than the value set in b4-02, the timer output function is turned OFF. An example of timer function operation is given in the following diagram.
5
Timer function input
Timer function output
Fig 5.49 Timer Function Operation Example
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46
Output Contactor Answer Back Detection
The output contactors can be observed using the output contactor answer back function. Therefore an auxiliary contact of the motor contactors must be connected to a digital input which is set to for this function
(H1-=86). If no answer back signal comes from the contactor, the inverter detects a SE1 fault (see below).
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
Function
V/f
Yes
Control Methods
Open
Loop
Vector
Yes
Closed
Loop ´
Vector
Yes 86 Output contactor answer back
SE1 fault (SE1:Contactor Feed-back Faults)
There are 3 possibilities of fault condition
Case 1: Output contactor of output inverter kept closing before contactor closed command set.
Case 2: Output contactor cannot be closed within the contactor close delay time.
Case 3: Output contactor is opened during inverter running.
Contactor Faults
Run Delay
Speed
Up/Down
Speed selection
Inverter enable(D/I)
Contactor Control(D/O)
DC Injection/ zero servo
Contactor comformation
Contactor comformation
Contactor comformation
Case 1
Case 2
Case 3
