Encoder Line Length; Start-Up; Error Messages - KEB COMBIVERT F5 Instruction Manual

Description of the Interface
3.4.5

Encoder line length

The maximum line length for the connection line is limited by the signal frequency, cable ca-
pacity and the line resistance.
3.5

Start-up

After installation or exchange of an encoder interface some adjustments of the inverter/servo
software have to be done before operation:
• Switch on inverter
• Select application mode
• Select parameter Ec.10 and control whether value „6: SSI" is entered. The
displayed value has to be confirmed by „ENTER" in any case.
• Select parameter Ec.11 and adjust the increments per revolution to 1024.
• Select parameter Ec.17 and adjust 4-fold evaluation (1024 inc x 4 = 4096 inc)
• Ec.42 and Ec.24 (Ec.20 upto V2.8) and adjust the encoder breakage recogni-
tion dependent on the case of operation.
• Select parameter Ec.21 and adjust multiturn resolution (standard 12 Bit); ad-
just „0" for singleturn encoders.
• Select parameter Ec.22 and adjust clock frequency for SSI encoder.
• Select parameter Ec.23 and adjust data format (standard Gray-Code).
• Ec.30 displays the read out position of the SSI encoder.
• A system offset can be defined by writing on parameter Ec.34 or approaching
to reference point.
3.6

Error messages

Error messages and their meaning are described in chapter 9 of the application manual.
14
Encoder line length =
max. encoder current I
Supply voltage U: Voltage output
min. supply voltage U
KEB encoder cable resistance R: 0.036 Ω/m at 0.5 mm²
U - U
min
––––––––––
I • 2 • R
max
: see encoder description
max
: see encoder description
min