n37
Setting range n38
Setting range n39
Setting range
Multi-function I/0
Chapter 5-9
5-9 Multi-function I/0
5-9-1 Multi-function Input
The J7AZ incorporates four multi-function input terminals (S2 through S5).
Inputs into these terminals have a variety of functions according to the application.
Multi-function Input (n36 through n39)
n36 Multi-function Input 1 (S2) No
Setting range
2 to 8, 10 to 22
(see note)
Unit of setting
1
Changes during operation
Default setting 2
No
0,2 to 8, 10 to 22
(see note)
Multi-function Input 2 (S3)
Unit of setting
1
Changes during operation
Default setting 5
2 to 8, 10 to 22
(see note)
Multi-function Input 3 (S4)
Unit of setting
1
Changes during operation
Default setting 3
Multi-function Input 4 (S5) Changes during operation
Default setting 6 2 to 8, 10 to 22, 34, 35
(see note)
Note
Unit of setting
1
Do not set values outside the above setting ranges.
No
No
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Multi-function I/0
Chapter 5-9
18
19
20
21
22
2
3
4
5
Set Values
7
8
10
Value Function Description command By setting n37 to 0, the set value in n36 is ignored and the following setting are forcibly made.
S1:
S2:
S3:
RUN input (RUN when ON)
STOP input (STOP when OFF)
Forward/Reverse rotation command
(OFF: Forward; ON: Reverse)
Reverse/Stop
External fault (NO) reference 1
Multi-step speed reference 2
Reverse rotation command (2-wire sequence)
ON: External fault (FP _ detection: _ is a terminal number)
OFF: External fault (EF _ detection: _ is a terminal number) External fault (NC)
Fault reset
Multi-step speed reference 3
ON: Fault reset (disabled while RUN command is input)
Signals to select frequency references 2 through 8.
Note Refer to
5-5-4 Setting Frequency References through Key
Sequences
for the relationship between multi-step speed references
and frequency references.
Note Any multi-step speed reference not set is regarded as turned-OFF input.
Inching frequency command ON: Inching frequency command (taking precedence over the multi-step speed reference)
12
13
14 time selection
External base block command (NO)
ON: Output shut off (while motor coasting to a stop and “bb” flashing)
External base block command (NC)
Search command (Searching starts from maximum frequency)
OFF: Output shut off (with motor free running and “bb” flashing)
ON: Speed search (Searching starts from n09)
ON: Speed search
(Searching starts from preset frequency)
16 Acceleration/Decelerationprohibit command
17 Local or remote selection
ON: Acceleration/Deceleration is on hold (running at parameter frequency)
ON: Local mode (operated with the Digital Operator)
Note After this setting is made, mode selection with the Digital Operator is not possible.
34
35
Communications or remote selection
ON: RS-422A/485 communications input is enabled.
OFF: The settings of n02 and n03 are enabled.
Emergency stop fault (NO) The Inverter stops according to the setting in n04 for interruption mode
Emergency stop alarm (NO) selection with the emergency stop input turned ON.
n04 set to 0: Decelerates to stop at deceleration time 2 set in n19.
Emergency stop fault (NC) n04 set to 1: Coasts to a stop.
Emergency stop alarm (NC)
Note NO: Emergency stop with the contact closed
NC: Emergency stop with the contact opened.
Up or down command
Note Fault: Fault output is ON and reset with RESET input.
Alarm output is ON (no reset required).
Note “STP” is displayed (lit with fault input ON and flashes with alarm input
ON)
Up or down command (set in n39 only)
By setting n39 to 34, the set value in n38 is ignored and the following settings are forcibly made.
Self-diagnostic test
S4: Up command S5: Down command
Note It is impossible to set the up or down command and multi-step speed references 1 through 3 together.
Note For up and down command functions in detail, refer to 6-7-7
UP/DOWN Command Frequency Memory (n62).
ON: RS-422A/485 communications self-diagnostic test (set in n39 only)
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Multi-function I/0
Chapter 5-9
Operation in 2-wire Sequence (Set Value: 2)
• The Inverter operates in 2-wire sequence by setting a multi-function input parameter to 2 (reverse/stop).
• The following diagram shows a wiring example of the terminals in 2-wire sequence.
Forward-rotation switch
Reverse-rotation switch
S1
Forward/Stop (Forward rotation with the forward-rotation switch closed and reverse-rotation switch opened)
S _
Reverse/Stop (Reverse rotation with the reverse-rotation switch closed and forward-rotation switch opened) _ : 2 to 5
SC Sequence input common
Operation in 3-wire Sequence (n37 = 0)
• The Inverter operates in 3-wire sequence by setting n37 for multi-function input 2 to 0.
• Only n37 can be set to 0 (3-wire sequence). By making this setting, the set value in n36 is ignored and the following settings are forcibly made.
S1: RUN input (RUN when ON)
S2: STOP input (STOP when OFF)
S3: Forward/Reverse rotation command (OFF: Forward; ON: Reverse)
• The following diagram shows a wiring example of the terminals in 3-wire sequence.
Stop switch
(NC)
Operation switch (NO)
S1 RUN input (RUN with the STOP switch and RUN switch closed)
Direction switch
S2 STOP input (with the STOP switch opened)
S3
Foward/Reverse rotation command (Forward rotation with the direction switch opened and reverse rotation with the direction switch closed
SC Sequence input common
External Base Block Command (Set Value: 11, 12)
When an SPST-NO (setting: 12) or SPST-NC (setting: 13) input is received,
Inverter outputs are shut OFF. Use these inputs in the following cases to stop
Inverter outputs.
• For switching the motor to free running status when applying an external brake.
• For stopping Inverter outputs before disconnecting motor wiring when changing the motor connections from the Inverter to a commercial power supply.
Note The external base block only shuts OFF the Inverter’s output frequency, and the Inverter’s internal frequency continues to be calculated as usual.
Therefore, if the external base block is clearedwhen the frequency is other than zero, the frequency calculated at that point will be output. Because of this, if the baseblock is cleared during deceleration while the motor is free running, a large discrepancy between the motor speed at that moment and the Inverter output frequency may result in a main circuit overvoltage (OV) or overcurrent (OC).
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Speed Search (Set Value: 14, 15)
The speed search function is provided for smooth restarting without stopping a free running motor. Use it when switching the motor from commercial power supply operation to Inverter operation, when starting with the Inverter a motor turned by external force, etc.
The speed search function searches for the present motor frequency, from high frequency to low. When the motor’s rotation speed is detected, it is accelerated from that frequency to the frequency reference according to the acceleration/deceleration time setting.
Forward (reverse)
RUN command
ON
Time
Speed Search command
ON
0.5 s min.
Time
Output frequency
High-speed frequency or set frequency
(frequency reference)
Minimum base block time (0.5 s) Speed search operation
Time
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Multi-function I/0
Chapter 5-9
5-9-2 Multi-function Output
The J7AZ incorporates two multi-function output terminals (MA and MB).
Output from these terminals has a variety of functions according to the application.
Selecting the Multi-function Output (n40)
n40 Multi-function Output (MA/MB and MC) Changes during operation
Default setting 1
No
Setting range
0 to 7, 10 to 17
(see note)
1
Note Do not set values outside the above setting ranges.
Set Values
3
4
5
0
Value Function
Fault output
Description
ON: Fault output (with protective function working)
1 Operation in progress ON: Operation in progress (with RUN command input or inverter output)
2 Frequency detection
6
7
10
11
12
Idling
Frequency detection 1
Frequency detection 2
Overtorque being monitored
(NO-contact output)
Overtorque being monitored
(NC-contact output)
Alarm output
Base block in progress
RUN mode
ON: Frequency detection (with frequency reference coinciding with output frequency)
ON: Idling (at less than min. output frequency)
ON: Output frequency ≥ frequency detection level (n58)
ON: Output frequency ≤ frequency detection level (n58)
Output if any of the following parameter conditions is satisfied.
• Overtorque detection function selection (n59)
• Overtorque detection level (n60)Overtorque detection level (n60)
• Overtorque detection time (n61)
Note NO contact: ON with overtorque being detected;
NC contact: OFF with overtorque being detected
ON: Alarm being detected (Nonfatal error being detected)
ON: Base block in progress (in operation with output shutoff)
ON: Local mode (with the Digital Operator)
13
14
15
16
17
Inverter ready
Fault retry
ON: Inverter ready to operate (with no fault detected)
ON: Fault retry (Inverter resetting with fault retry (n48) not set to 0)
UV in progress ON: Undervoltage being monitored
(main circuit undervoltage UV or UV1 detected)
Rotating in reverse direction ON: Rotating in reverse direction
Speed search in progress ON: Speed search in progress
Note
Unit of setting
Use “operation in progress” (set value: 1) or “idling“ (set value: 3) setting for the timing for stopping the motor using a brake. To specify a precise stop timing, set “frequency detection 1” (set value: 4) or “frequency detection 2”
(set value: 5), and set the frequency detection level (n58).
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