Lenze PositionServo 940, User Manual

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S94P01B
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6.3.7 ACCEL/DECEL Limits (Velocity mode only)
The ACCEL setting determines the time the motor takes to ramp to a higher speed.
The DECEL setting determines the time the motor takes to ramp to a lower speed. If
the ENABLE ACCEL\DECEL LIMITS is set to DISABLE, the drive will automatically
accelerate and decelerate at maximum acceleration limited only by the current limit
established by the PEAK CURRENT LIMIT and CURRENT LIMIT settings.
6.3.8 Reference
The REFERENCE setting selects the reference signal being used by the drive. This
reference signal can be either External or Internal. An External Reference can be
one of three types, a Analog Input signal, a Step and Direction Input or a Input from a
external Master Encoder. The Analog Input reference is used when the drive is either
in Torque or Velocity mode. The Master Encoder and Step and Direction reference
is used when the drive is in Position Mode. An Internal Reference is used when the
motion being generated is derived from drive’s internal variable(s), or User Program,
(See programmer’s manual).
6.3.9 Step input type (position mode only)
This parameter sets the type of input for position reference the drive expects to see.
Signal type can be step and direction (S/D) type or quadrature pulse-train (Master
Encoder / Electronic Gearing). Refer to section 5.2.1 for details on these inputs.
6.3.10 Fault Reset Option
The FAULT RESET OPTION selects the type of action required to reset the drive after
a FAULT signal has been generated by the drive. ON DISABLE clears the fault when
the drive is disabled. This is useful if you have a single drive and motor connected
in a single drive system. The ON ENABLE option clears the fault when the drive is
re-enabled. Choose ON ENABLE if you have a complex servo system with multiple
drives connected to an external controller. This makes troubleshooting easier since
the fault will not be reset until the drive is re-enabled. Thus, a technician can more
easily determine which component of a complex servo system has caused the fault.
6.3.11 Motor temperature sensor
This parameter enables / disables motor over-temperature detection. It must be
disabled if the motor PTC sensor is not wired to either P7.1-2 or to the resolver option
module (P11).
6.3.12 Motor PTC cut-off resistance
This parameter sets the cut-off resistance of the PTC which defines when the motor
reaches the maximum allowable temperature. See section 5.5.2 for details how to
connect motor’s PTC.
6.3.13 Second encoder
Disables or enables second encoder. Effectively selects single-loop or double-loop
configuration in position mode. The second encoder connects to the Encoder Option
Module (E94ZAENC1) connector P12, Refer to section 8.4 for details on dual loop
operation.