YASKAWA GA800

3.5 Control Circuit Wiring
116 YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Table 3.11 Power Supply and Alarm Display
Main Circuit Power Supply External 24 V Power Supply
o2-23
[External 24V Powerloss
Detection]
o2-26
[Alarm Display at Ext. 24V
Power]
Alarm Display
ON ON - -
-
ON OFF 0 [Disabled] -
-
1 [Enabled] - L24v [Loss of External Power 24
Supply]
OFF ON - 0 [Disabled] “Ready” LED light flashes quickly
- 1 [Enabled] EP24v [External Power 24V
Supply]
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 Operation Solution
Keypad The keypad operates the same as when the main circuit power supply is
ON. The drive will not detect oPr [Keypad Connection Fault].
-
Data Log 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.
*1
-
Communications by Communication Option or
MEMOBUS/Modbus Communication
Terminals
Communication operates the same as when the main circuit power
supply is ON. -
MFAI MFAI operates the same as when the main circuit power supply is ON.
-
MFAO MFAO operates the same as when the main circuit power supply is ON.
-
MFDI MFDI does not operate when the main circuit power supply of the drive
is OFF.
Connect the external 24 V power supply to the MFDI
selection common terminal (SC).
*2
MFDO
Multi-Function Photocoupler Output
Fault Relay Output Terminal
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 Pulse train input operates the same as when the main circuit power
supply is ON.
-
Pulse train output Pulse train output operates the same as when the main circuit power
supply is ON.
-
Encoder Option Speed Detection (PG-B3, PG-
X3, PG-F3, PG-RT3)
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.
When you use an encoder, make sure that the drive main
circuit power supply is ON.
*4
Analog Input Option (AI-A3) Analog input options operate the same as when the main circuit power
supply is ON.
-
Analog Output Option (AO-A3) Analog output options operate the same as when the main circuit power
supply is ON.
The operation is different for different drive software versions.
*5
-
Digital Input Option (DI-A3) Digital input options do not operate when the main circuit power supply
of the drive is OFF.
Connect the external 24 V power supply to the Input signal
common terminal (SC).
*2
Digital Output Option (DO-A3) Digital output options operate the same as when the main circuit power
supply is ON.
-
*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 Wiring MFDI Terminals on page 117 or Wiring
Digital Input Option (DI-A3) on page 117.