CONTREX CX-1200 - Manual (Page 135)

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JOG SP & RAMPS P1/1
The Jog screen includes the parameters that are related to “Jog” operation. The Jog Setpoint as well as the
accel and decel rates can be set in this screen. The loop type selection for the “Jog” mode of operation is also
available on this screen. You can “Jog” in open loop mode, which uses Kff to generate the Control Output
(CO_Sig) based on the desired Jog Setpoint. You can also “Jog” in closed velocity loop which uses Kff and
the PID loop to generate the Control Output (CO_Sig) based on the desired Jog Setpoint. The closed loop
operation requires Feedback, but should result in more accurate operating speed and better speed regulation.
There are also parameters to define the ramps used for “Jog”. The Jog SP (CP-240) in EU/Tm functions as
the reference speed. The Acl Tm Jog (CP-241) is the that time it will take to accelerate from “0” speed to
the Jog SP. The Acl Rt Jog (CP-242) is the acceleration rate for “Jog”. Dcl Tm Jog (CP-243) is the time it
should take to decelerate from the Jog SP to “0” speed. The Dcl Rt Jog (CP-244) is the deceleration rate
used when the Jog SP is changed to a lower value as well as when both the Jog Forward and the Jog
Reverse Inputs are deactivated and the speed is decreased to “0” speed before the state is changed to “R-
Stop”.
Jog SP
Jog Setpoint (CP-240) is the speed, in EU/Tm, at which Jog ramps when it is activated. The Jog ramp rates are
referenced to this speed.
Acl Tm Jog
Acceleration Time Jog (CP-241) is the time, in seconds, to accelerate from 0 to the Jog SP (CP-240).
Acl Rt Jog
Acceleration Rate Jog (CP-242) is the rate, in EU/Tm per second, that it takes to accelerate when Jog is activated.
Dcl Tm Jog
Deceleration Time Jog (CP-243) is the time, in seconds, that it takes to decelerate from Jog SP (CP-240) to 0, when the
Jog Input is deactivated or when switching between “Jog Fwd” and “Jog Rvs”.
Dcl Rt Jog
Deceleration Rate Jog (CP-244) is the rate, in EU/Tm per second, that is used when the Jog input is deactivated or
when switching between “Jog Fwd” and “Jog Rvs”.
Jog Loop Mode
Jog Loop Mode (CP-245) identifies the type of control loop (see list below) that is used during Jog.
1 = Velocity Loop (default)
0 = Open Loop