Inovance SV820N Series User Manual

- 12 -
1 Servo System Selection
1
Note
Checkthefollowingswhenusingthebuilt-indynamicbrake.
1. Asthedynamicbrakehasanemergencystopfunction,donotstopthemotorviathe
disabling signal from the servo drive. If the servo drive starts or stops via power ON/OFF
orservoON/OFFafterthecommandhasbeeninput,thedynamicbrakecircuitoperates
frequently and it will cause the deterioration and the failure of internal components of the
servo drive. At this time, start or stop the servo motor via the speed or position command.
2. Thedynamicbrakeisdesignedtomeettheshort-timeratedspecicationandcanonlybe
used for an emergency stop. Coast to stop the motor or stop the motor at zero speed in
normal circumstances. Perform the next step (re-power or re-run) within 3 minutes after
performingthedynamicbrakingwhenthemotorrotatesatahighspeed.
3. Thedynamicbrakecanbeusedwhen:
①
the control power is off,
②
the servo is powered off, or
③
the protection feature is enabled.
Parameterscanbesettoenableordisablethedynamicbrakeduringthedecelerationor
after stopping under
①
–
③
.Whenthecontrolpowerisdisconnected,thedynamicbrake
will act.
4. RefertoH02-08Parametersforfunctionsettingofdynamicbrake
1.2.2 EtherCATCommunicationTechnicalSpecications
Item Specications
Basic
performance
of EtherCAT
slave station
Communication protocol EtherCAT protocol
Service supported CoE (PDO, SDO)
Synchronization mode DC-distributedclock
Physical layer 100BASE-TX
Baud rate 100 Mbit/s (100Base-TX)
Duplex mode Full duplex
Topological structure Ring and linear
Transmission medium Shielded CAT 5E cable or better
Transmission distance
Less than 100 m between two nodes (good environment and
cables)
Number of slave stations Support 65,535 in terms of the protocol
EtherCAT frame length 44–1,498 bytes
Process data Maximum 1,486 bytes per Ethernet frame
Synchronization jitter of two slave
stations
<1us(specicresulttobedetermined)
Update time
About 30 us for 1,000 digital inputs and outputs
100 servo axes about 100 us
Denedifferentupdatetimesfordifferentinterfaces
Communication code error rate 10-10 Ethernet standard
EtherCAT
Conguration
unit
FMMU unit 8
Storage synchronization
management unit
8
Process data RAM 8 KB
Distributedclock 64 bits
EEPROM capacity
32 Kbit
Initialization data to be written in via EtherCAT master station

Inovance SV820N Series Specifications

General

Brand	Inovance
Model	SV820N Series
Category	Servo Drives
Language	English