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ACT2000
Note: For proper operation of the actuator, the voltage between the control
inputs and the negative terminal of the power supply should be below 200 VDC.
The discrete inputs and outputs are 24 VDC and are electrically isolated up to
500 VAC.
The recommended wiring is a fourteen-conductor shielded cable containing
twisted-pair wires with individual shields. Use a wire size large enough to
accommodate the installation and provide a maximum
fifty (50) ohm loop
resistance. See Table 3-2 for recommended wire sizes.
Distance to User Controller Wire Size (Minimum)
Up to 1000 ft AWG 18 stranded
Over 1000 ft Consult Factory
Table 3-2: Digital Harness Recommended Wire Size
Note: Use a separate conduit for the signal wiring. This will prevent noise
pickup and transmission from ancillary equipment, which could
cause instability in the actuator.
Shielded Wiring
All shielded cable must be a twisted conductor pair with either a foil or braided
shield. All signal lines should be shielded to prevent picking up stray signals.
Connect shields per Figure 3-3 (page 3-8). Wire exposed beyond the shield
should be as short as possible.
WARNING:
Property Damage Hazard – This actuator is 89/339/EEC EMC Directive
compliant (CE mark) using watertight, flexible conduit (plastic over steel)
and Belden 8719 shielded, twisted pair audio, broadcast and
instrumentation cable. Use of other conduit or wire invalidates EMC
Directive compliance.
Property Damage Hazard – Do Not connect 24VDC power without current
limiting (25 mA) across digital or analog outputs.
Serial Wiring
The serial inputs are not electrically isolated. Isolation must be provided when
connecting to a computer.
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