Installing the Drive
3-49
DC590+ DRV Series DC Digital Drive
Microtachs (F1, C1, C9)
A Microtach can be connected to provide speed feedback via the Microtach Option Board using the
international standard “ST” fibre optic system. This board provides terminal F1. F1 is the fibre optic
receiver input socket. Terminals C9 (+24V dc) and C1 (0V) are used to provide the supply and return
respectively.
Fiber optic encoders (or Microtachs) come in either glass or plastic.
•
While the glass Microtachs (5901) can transmit a feedback signal over a long range without a
repeater, they require a special termination tool to properly cut and polish the glass fiber optic cable.
•
The 5701 Microtach is used with plastic fiber optic cable, which needs only a set of pliers for
termination. The signal range for plastic, however, is limited and may require a Microtach repeater.
½" diameter, composite, plastic, fiber optic cable is available. The cable includes two 16 AWG
conductors with a plastic fiber optic conductor sheathed in a protective plastic coating. This cable is
recommended when running plastic fiber optic cable within conduit.
Each type of Microtach requires its own receiver board and may be powered directly from the drive's +24
VDC supply.
The speed loop is set-up for the Microtach by the SPEED FBK SELECT parameter in the SPEED LOOP
function block. Select ENCODER for this parameter.
The maximum Microtach frequency is 50kHz, thus with a standard 1000 lines per revolution Microtach
the motor speed cannot exceed 3000 rpm.
5701/5901 Microtach
5701/5901 MICROTACH
OPTION BOARD
COMMS
Option
Mounting
Summary of Contents for 590+ DRV
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Page 126: ...3 88 Installing the Drive DC590 DRV Series DC Digital Drive...
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Page 166: ...5 8 Control Loops DC590 DRV Series DC Digital Drive...
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Page 292: ...B 16 Certification DC590 DRV Series DC Digital Drive...
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Page 368: ...D 20 Programming DC590 DRV Series DC Digital Drive Functional Description...
Page 496: ...D 148 Programming DC590 DRV Series DC Digital Drive Programming Block Diagram Sheet 1...
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