YASKAWA VS-626M5 Instruction Manual page 81

Control Signals
4.1.4 Details on Sequence Input Signals
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SV (Servo Mode Signal)
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SV Function Selection:
C1−36
Bit
The servo mode for a solid tap or similar device will be switched to when 6CN-12 turns ON.
In the servo mode, the speed loop gain and other control constants for servo mode will be used.
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The following control constants will be enabled in servo mode.
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Speed control proportional gain (C1-05 and C1-07)
Speed control integral time constant (C1-06 and C1-08)
Servo mode magnetic flux level (C1-31 and C1-33)
Servo mode base speed ratio (C1-32 and C1-34)
PPI (P/PI Control Selection Signal)
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PPI Function Selection:
C1−36
Bit
P control functions when 6CN-15 turns ON.
PI control functions when 6CN-15 turns OFF.
The PPI signal is used to select the P or PI control of the speed controller.
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When the PPI signal is turned ON, the speed controller will be in P control regardless of the operating
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status of the system.
Turn pin 15 OFF when P control is not to be performed.
D
LM10 (Load Factor Meter ×10 Selection Signal)
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LM10 Function Selection:
C1−36
Bit
The LM10 signal functions when 6CN-15 turns ON.
(Not used for NC system (M5N). )
The LM10 signal is used to improve the signal-noise ratio of the system with light loads by increasing
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the sensitivity of the load factor meter by 10 times.
DAS (Speed Reference Digital/Analog Selection Signal)
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Analog input will be selected when 6CN-5 is turned OFF.
Digital input will be selected when 6CN-5 is turned ON.
(Not used for NC system (M5N). )
The DAS signal is used to select an analog input (10 V/100%) or digital input for the speed reference.
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The analog speed reference is selected when the DAS signal is turned OFF, and the digital speed refer-
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ence is selected when the DAS signal is turned ON.
The DAS signal can be turned ON or OFF only when the system is not operating.
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The following four types of digital speed reference can be selected.
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12-bit binary (factory setting)
3-digit BCD
2-digit BCD
Internal speed setting
The digital speed reference is selected with bits 7 and 6 of selection signal C1-37.
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Refer to 4.3 Using a 12-bit Digital Speed Reference.
RST (Fault Reset Signal)
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The RST signal functions when 6CN-13 turns OFF.
(Not used for NC system (M5N). )
The RST signal is used to reset the system after the protective circuit operates for overcurrent or over-
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load protection and the probable cause is eliminated.
6CN-12 will be the SV signal if bit 03 of the C1-36 selection signals (SEL1)
is turned ON.
3
6CN-15 will be the PPI signal if bit 04 of the C1-36 selection signals (SEL1)
is turned OFF.
4
6CN-15 will be the LM10 signal if bit 04 of the C1-36 selection signals
(SEL1) is turned ON.
4
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