YASKAWA GA800 Technical Reference page 116

3.5 Control Circuit Wiring
Main Circuit Power Supply
ON
ON
OFF
Operation When Using External 24 V Power Supply
To operate the drive, de-energize the main circuit power supply and connect an external 24 V power supply to
terminals PS-AC.
Function
Keypad
Data Log
Communications by Communication Option or
MEMOBUS/Modbus Communication
Terminals
MFAI
MFAO
MFDI
MFDO
Multi-Function Photocoupler Output
Fault Relay Output Terminal
Pulse Train Input
Pulse train output
Encoder Option Speed Detection (PG-B3, PG-
X3, PG-F3, PG-RT3)
Analog Input Option (AI-A3)
Analog Output Option (AO-A3)
Digital Input Option (DI-A3)
Digital Output Option (DO-A3)
*1 When you use an external 24 V power supply, the operation of the data log function is different for different drive software versions. On
drives with software versions PRG: 09015 and later, you can continue the data log function.
Note:
The "PRG" column on the nameplate on the right side of the drive identifies the software version. You can also use U1-25 [SoftwareNumber
FLASH] to identify the software version.
*2 When you use MFDI and a Digital Input option (DI-A3), wire the terminals as shown in
Digital Input Option (DI-A3) on page
116
Table 3.11 Power Supply and Alarm Display
External 24 V Power Supply
ON
OFF
ON
The keypad operates the same as when the main circuit power supply is
ON. The drive will not detect oPr [Keypad Connection Fault].
The data log function operates the same as when the main circuit power
supply is ON.
The operation is different for different drive software versions.
Communication operates the same as when the main circuit power
supply is ON.
MFAI operates the same as when the main circuit power supply is ON.
MFAO operates the same as when the main circuit power supply is ON.
MFDI does not operate when the main circuit power supply of the drive
is OFF.
MFDO operates the same as when the main circuit power supply is ON.
The operations of MFDO terminals and fault relay output terminals set
for H2-xx = E [Fault] are different for different drive software versions.
*3
Pulse train input operates the same as when the main circuit power
supply is ON.
Pulse train output operates the same as when the main circuit power
supply is ON.
Encoder options do not operate when the main circuit power supply of
the drive is OFF.
The operation to detect encoder option-related faults is different for
different software versions.
Analog input options operate the same as when the main circuit power
supply is ON.
Analog output options operate the same as when the main circuit power
supply is ON.
The operation is different for different drive software versions.
Digital input options do not operate when the main circuit power supply
of the drive is OFF.
Digital output options operate the same as when the main circuit power
supply is ON.
117.
o2-23
[External 24V Powerloss [Alarm Display at Ext. 24V
Detection]
-
0 [Disabled]
1 [Enabled]
-
-
Operation
*1
*5
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
o2-26
Alarm Display
Power]
-
-
- L24v [Loss of External Power 24
Supply]
0 [Disabled] "Ready" LED light flashes quickly
1 [Enabled] EP24v [External Power 24V
Supply]
Solution
-
-
-
-
-
Connect the external 24 V power supply to the MFDI
*2
selection common terminal (SC).
-
-
-
When you use an encoder, make sure that the drive main
*4
circuit power supply is ON.
-
-
Connect the external 24 V power supply to the Input signal
*2
common terminal (SC).
-
Wiring MFDI Terminals on page 117
-
-
or Wiring