INSTRUCTION MANUAL
EZA11K Series
TDK-Lambda
<Page>
10-4.
Broadcast Address
Interface Address "0xFF" and Interface "0xkF"(k : 0
～
7) are special addresses and functions as broadcast address.
When "0xFF" is set as receiving address in command sent by Host, all the converters connected within the
interface bus receives that command.
When the lowest digit of the address is set to "F", all the converters within the same group receives that command.
Please note that all commands sent to the Broadcast Address cannot make the response message.
Below is an example of converter address and their corresponding Broadcast Address.
*For details regarding Serial Interface, please refer to “Communication Manual”
11. Alarm
11-1
Types of Alarm
Alarm status can be verified by RS-485 interface.
11-1-1.
Heavy Alarm
When Heavy Alarm is detected, External signal connector ALM signal is triggered (open).
When this happens during power conversion process, power conversion stops and the external signal connector PG
becomes open. Heavy Alarm can be reset by alarm clear command (Interface, External Signal Connector ALMCLR
or pushing Tact Switch RESET).
After resetting the alarm, power conversion will commence again if the
converter operation command is inputted.
11-1-2. Heavy Alarm (System Alert)
When Heavy Alarm (System Alert) is detected, external signal connector ALM signal is triggered (open). When this
happens during power conversion process, power conversion stops and the external signal connector PG becomes
open. Heavy Alarm (System Alert) cannot be reset by alarm clear command. Heavy Alarm (System Alert) can be
reset by power down and power on again. Depending on the cause Heavy Alarm (System Alert) might re-occur.
11-1-3.
Light Alarm
If a light alarm occurred during power conversion operation then power conversion operation will stop and the
external signal connector PG will open. Light alarm indicates that power conversion cannot be executed due to
external abnormalities. Power conversion will commence once the external abnormalities are removed and the
converter operation mode command is valid.
14/24
Broadcast Group :
0x1F
Broadcast Group :
0x6F
Broadcast Group :
0x7F
Terminator
Terminator
CNV1
Address
0x01
CNV2
Address
0x02
CNV3
Address
0x11
CNV4
Address
0x12
CNV5
Address
0x61
CNV6
Address
0x62
CNV7
Address
0x71
CNV8
Address
0x72
EMS
Address
0x00
Broadcast Group :
0x0F
Broadcast Group :
0xFF
Alarm category
Alarm Rest
Operating Detail
Converter Stopped, Alarm Signal triggered ON, PG Open;
Can be reset to STOP status by Alarm Clear Command
Converter Stopped, Alarm Signal triggered ON, PG Open;
Cannot be reset by Alarm Clear Command
Converter Stopped, PG Open;
Can be reset to former status by clearing the alarm
Heavy Alarm
Can be Reset
Heavy Alarm (System Alert)
Cannot be Reset
Light Alarm
Can be Reset
