CONTREX CX-1200 - Manual (Page 146)

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LARGE ERROR P1/1
State
State (MP-50) displays the present system operating state of the CX-1200 (see list below). Only one operating state
may be active at a time. To access either the “Run” or the “Jog” operating state, the F-Stop, R-Stop and H-Stop inputs
must be closed.
9 = Not Defined
8 = Diagnostics
7 = Not Defined
6 = Not Defined
5 = Jog
4 = Not Defined
3 = Run
2 = H-Stop
1 = R-Stop
0 = F-Stop
Cntrl Loop
Control Loop (MP-49) displays the present operating mode of the CX-1200. Only one type of loop can be active at a
time. These modes are automatically selected depending on the present system State (MP-50).
3 = Psn Hld (H-Stop Position Loop)
2 = Position Loop
1 = Velocity Loop
0 = Open Loop
OverSpdAllow
Over Speed Allowance (CP-369) sets a limit for the maximum speed ratio allowed while the CX-1200 is recovering
position error using the ‘Large Position Error Correction’ algorithm. This limits how much faster than the lead, the
follower is allowed to go. Example: a value of 50% would allow the follower to go 1.5 times the lead speed in order to
recover the position error.
LgErrGain
Large Error Gain (CP-368) sets the rate of position error recovery while the CX-1200 is utilizing the ‘Large Position Error
Correction’ algorithm. Larger gain will result in faster recovery.
LgErrThld
Large Error Threshold (CP-367) sets a threshold for the magnitude of Posn Err (MP-33) allowed before the CX-1200 will
utilize its special ‘Large Position Error Correction’ algorithm. The CX-1200 will enter the LPECA when the magnitude of
the position error is greater than the value entered for LgErrThld (CP-367). The CX-1200 will return to its normal position
loop when the magnitude of the position error is less than or equal to 1/4 the value entered for LgErrThld (CP-367).
Ld Posn
Lead Position (MP-10) displays the present value of the Lead Position in Engineering Units, as specified by Pulses FI1
(CP-262) and EU FI1 (CP-263). The placement of the decimal point is the same as the placement of the decimal point in
EU FI1 (CP-263).
Fb Posn
Feedback Position (MP-20) displays the present value of the Feedback Position in Engineering Units, as specified by
Pulses FI2 (CP-267) and EU FI2 (CP-268). The placement of the decimal point is the same as the placement of the decimal
point in EU FI2 (CP-268).
PosnErr
Position Error (MP-33) displays the value, in engineering units, of the accumulated position error between the lead (FI1)
and the feedback (FI2) input signals. The placement of the decimal point is the same as the placement of the decimal
point in EU FI2 (CP-268).