Safety
information
Product
information
Mechanical
installation
Electrical
installation
Getting
started
User Menu A Commissioning
Advanced
Parameters
Diagnostics Optimization CT MODBUS RTU Technical Data
E300 Design Guide 227
Issue Number: 1
Drive Encoder Type (C01): SC Hiperface, EnDat, SC EnDat, SSI, SC.SSI, BiSS
Drive Encoder Comms Bits (C08) should be set to the total number of bits of position information in the comms message from the encoder. If SSI
communications is being used this should include any leading or trailing zeros and the power supply alarm bit if present.
Drive Encoder Type (C01): Any other device type
Drive Encoder Comms Bits (C08) has no effect.
Drive Encoder Feedback Filter (C09) defines the time period for a sliding window filter that may be applied to the feedback taken from the Drive
position feedback interface. This is particularly useful in applications where the drive encoder is used to give speed feedback for the speed controller
and where the load includes a high inertia, and so the speed controller gains are very high. Under these conditions, without a filter on the feedback, it
is possible for the speed loop output to change constantly from one current limit to the other and lock the integral term of the speed controller. In
Unidrive SP this filter was applied to the output of the sensorless speed feedback, however, a separate filter is now provided (see Sensorless Mode
Filter (C17)).
When the position feedback is initialized, at power-up or at any other time, a delay is included before the information from the feedback device is used
or any attempt is made to communicate with the device. The minimum delays are shown in the table below. Drive Encoder Additional Power Up Delay
(C10) defines an additional delay that is added to the minimum delay.
C08 Drive Encoder Comms Bits
Mode RFC-A, RFC-S
Minimum 0 Maximum 48
Default 0 Units
Type 8 Bit User Save Update Rate Background read, Auto-configuration write
Display Format Standard Decimal Places 0
Coding RW
C09 Drive Encoder Feedback Filter
Mode RFC-A, RFC-S
Minimum 0 Maximum 5
Default 0 Units
Type 8 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 0
Coding RW, Txt
Value Text
0 Disabled
11 ms
22 ms
34 ms
48 ms
5 16 ms
C10 Drive Encoder Additional Power Up Delay
Mode RFC-A, RFC-S
Minimum 0.0 Maximum 25.0
Default 1.5 Units s
Type 8 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 1
Coding RW, BU
Drive Encoder Type (C01) Minimum delay
AB, FD, FR
AB Servo, FD Servo, FR Servo
SC, SC Serv, SC SC
100 ms
SC Hiperface 150 ms
EnDat, SC EnDat
SSI, SC SSI
BISS
1.3 s
To Next Page
Loading...
