CONTREX CX-1200 - Manual (Page 157)

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LIMITS P1/2
The Limits screen includes the parameters that limit certain operating conditions. Some appear on other
screens that are more relevant to their function.
Max Spd Lmt
The Maximum Speed Limit (CP-330) is the maximum positive and negative limit applied to the ScaledRef (MP-30) while
operating in “Run” mode.
Min Spd Lmt
The Minimum Speed Limit (CP-331) is the minimum positive and negative limit applied to the ScaledRef (MP-30) while
operating in “Run” mode. The ramp accelerates to the Min Spd Lmt (CP-331) if the reference speed is less than the
Min Spd Lmt (CP-331).
Zero Speed
When the magnitude of the Fb EU/Tm (MP-06) is less than or equal to Zero Speed (CP-332), the Fb @ 0Spd bit (54) in
the PLC is set to “1”. This value, as well as the PLC Fb @ 0Spd bit condition, is used in other transparent internal
calculations that are based on feedback information.
Trim Authority
The trim contribution to the DAC output is limited to positive and negative Trim Authority (CP-333).
Integral Limit
The integral contribution to the trim term is limited to the positive and negative Integral Limit (CP-334). Integral Limit
(CP-334) can decrease the effects of integral windup or it can limit the maximum effect of the integral term.