Motion Control Engineering Motion 4000, Руководство пользователя

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User Interface
4-130 Manual # 42-02-2P24
Normal Terminal Switch Parameter Explanations
At contract speeds below 400 FPM, up and down normal terminal switches are not used as tra-
ditional limit switches. Instead, Normal Terminal Limit switches 2 - 5 are set to “unused”
through controller F7 parameters and Normal Terminal Limit switches 1 Up and 1 Down are
used as Terminal Slowdown Switches. (UNTS-2 and DNTS-2 do have a role when reduced
stroke buffers are used.) The UNTS-1 and DNTS-1 switches also act as final position arbiters for
the elevator positioning system.
Please refer to “Hoistway Switch Requirements, ELGO” on
page 2-52 for additional information.
At contract speeds above 400 FPM, Normal Terminal switches are used as required per con-
tract speed. Each normal terminal switch has distance and speed parameters associated with it:
• xNTSn Speed: Learned value (percentage of normal run contract speed) at or below which
the car must be traveling when the switch is encountered to avoid triggering an overspeed
fault. If a fault is triggered, car reaction is determined by the Delta Low and Delta High
speed settings.
• xNTSn Delta Low Speed: (3% of Learned Speed) If the car is traveling in excess of xNTSn
Speed + xNTSn Delta Low Speed but not in excess of xNTSn Speed + xNTSn Delta High
Speed, the controller will initiate a controlled slowdown to Correction Speed and continue
toward the destination floor until reaching Proximity Distance from the landing. From this
point, the controller will move the car at leveling speed and level into the landing.
• xNTSn Delta High Speed: (10% of Contract Speed) If the car is traveling in excess of
xNTSn Speed + xNTSn Delta High Speed, the controller will initiate an emergency stop by
cutting off power to the motor and dropping the machine brake. After coming to a com-
plete stop, the car will travel to the destination floor at Correction Speed until reaching
Proximity Distance from the landing. From this point, the controller will move the car at
leveling speed and level into the landing.
• xNTSn Distance: Distance from the terminal at which the switch is located.
• xNTSn Delta Distance: Defines a distance on each side of the switch to establish a range
within which the switch must be encountered to avoid triggering a switch position error. If
a switch is not encountered within the range, the controller will initiate an emergency stop
by cutting off power to the motor and dropping the machine brake. After coming to a com-
plete stop, the car will travel to the terminal floor at reduced speed, open its doors to allow
passenger exit, and remove itself from service until the fault is cleared.
Note
Delta speeds are always added to the base speed at the switch. For example, if contract speed is
250 FPM, and learned switch Speed is 200 FPM, the Delta Low Speed is 6 FPM, and the Delta
High Speed is 25 FPM, the low and high overspeed limits will be 206 FPM and 225 FPM respec-
tively.