Quin Q-drive Installation & User Manual
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Contents
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Q-Drive Installation Manual Issue 1.5Page 16 Copyright © 1996 Quin Systems Ltd.Figure 4. P2 Upper: resolver connector4.2.2 P2 Lower: EncoderThe Encoder output uses the lower half of connector P2 and is wired as shown in Table5: and Figure 5. . The Q-Drive servo amplifier simulates an incremental encoder usingthe positional information obtained from the resolver. The encoder resolution can be ashigh as 1024 pulses per revolution (PPR) when the drive speed is limited to 3500 RPM.If the drive is required to move the motor at higher speeds then the encoder resolutiondrops to a maximum of 512 PPR. If the drive is set to 1024 PPR and 6000 RPM then anincorrect encoder pulse train will be produced.The cables used for the encoder signals should be high quality screened cables, usingindividually screened twisted pairs, with an overall cable screen as well. The cablescreen should be connected directly to the main earth point, not via the control system0V supply.It is recommended that the maximum cable length for the encoder output should notexceed 25m, which should not be a problem as the Q-drive and control system canusually be mounted within the same cabinet. If the machine installation requires a cablelonger than 25m, then it may be necessary to install an additional line driver unit toboost the encoder signals.S c r e e nHeidenhain cabletype 200 775 02765YellowGreyW h i t eB r o w nPinkG r e e nBlueR e d32148 9 |
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