6 DCP Interface
YASKAWA TOEPC710616134G AC Drive L1000A Technical Manual Addendum 31
Date/Time Message from Lift Controller
The lift controller transmits the message after each initialization message ('I' '0') plus once per day (preferred at
"day changeover").
If the lift controller doesn't support this message type, no Date/Time-message will be received by the drive
controller. In this case, the drive controller has to operate without a synchronization of the clock.
Response to Switching Function Message from Drive Controller
As confirmation, the drive controller sends the following message to the lift controller.
STX 1C 'I' '3' ETX
"Emergency Power Supply"/"Energy Saving Mode" Message ('I' '6')
After switching on the emergency supply, the drive controller is sending information to the drive controller. With
this information, the drive controller is able to execute the travel with reduced energy consumption. The Energy
Saving Mode is enabled only in case of CLV/PM control mode.
"Emergency Power Supply"/"Energy Saving Mode" Message from Lift Controller
After switching on the emergency supply, the drive controller is sending the following message.
STX 1C 'I' '6' Power Supply Energy Saving Mode ETX
When no message ('I' '6') is sent, normal mains operation without energy-saving mode is set up.
Power Supply :
'N' Normal mains operation
'U' Emergency supply
The ’U’ request is taken by the drive controller to reduce the regular undervoltage level [L2-05] of the drive. In
this condition, the UV level is at 50 V for 400 V units, and at 25 V for 200 V units.
Energy Saving Mode :
'0' No energy saving mode - normal operation
'1' Energy saving mode 1 (In CLV/PM AC Drive control mode only)
'2' Energy saving mode 2 (In CLV/PM AC Drive control mode only)
Response to "Emergency Power Supply"/"Energy Saving Mode" Message by Drive Controller
The drive controller responds with the same telegram in case it supports these modes. If a mode is not supported,
it responds with the actual mode it works.
STX 1C 'I' '6' Power Supply Energy Saving Mode ETX
If the telegram is not supported and the drive does not respond, the controller assumes normal main supply
without energy-saving mode.
When energy-saving modes '1' or '2' are switched ON, parameter b8-01 is set to 1 when in CLV/PM control mode.
When '0' is transferred, b8-01 is set back to 0.
Power Supply :
'N' Normal mains operation
'U' Emergency supply (The drive immediately indicates that it is operating below normal undervoltage levels [L2-
05] by transferring ’U’)
Energy Saving Mode :
'0' No energy saving mode - normal operation
'1' Energy saving mode 1 (In CLV/PM AC Drive control mode only)
'2' Energy saving mode 2 (In CLV/PM AC Drive control mode only)
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