User manual BENSHAW MICRO II DICTIONARY

[. . . ] Micro II Dictionary BENSHAW ADVANCED CONTROLS & DRIVES Publication #: 890002-05-00 Redi-Start MicroII Redi-View Dictionary REVISION RECORD Rev. 00 Date 09-26-2000 ECO# 164 Author Matt Ross Description Initial Release Page 2 of 36 Redi-Start MicroII Redi-View Dictionary Quick Start Quick Start/Motor FLA (Min 1A, Max 1200A, Default 1A) The motor FLA (Full Load Amps) parameter must be set to the nameplate FLA of the motor connected to the starter for the starter to function correctly. If there is more than one motor connected, the motor FLA should be set to the sum of the connected motor full load amps. NOTE: The starter uses the entered motor FLA for every current based calculation. [. . . ] By using the motor winding heater the motor will be kept "warm" therefore eliminating condensation and early winding failures. The Anti-Windmill feature applies a very low torque brake to the motor when in an off state. This torque can be used to eliminate the windmill effect of fans. Starter Setup/Heat/Anti-Windmill/Heat Current (Min 5%, Max 25%, Default 10%) The heater current parameter sets the level of D. C. current that reaches the motor when the motor winding heater/anti-windmilling brake is enabled. The motor winding heater/anti-windmilling brake can be used to heat a motor to prevent internal condensation or it can be used to prevent a motor from rotating. The motor winding heater/anti-windmilling brake operation has to be enabled by placing a jumper between terminals 4 and 13 of JC11. To use the motor winding heater/anti-windmilling brake, apply 120VAC to input terminal 8 of the JC13 terminal block on the RediStart Micro computer card and then give the unit a start command. Instead of starting the motor, the unit will provide a continuous, low level D. C. CAUTION: The level of DC current applied to the motor during this operation needs to be monitored to ensure that the motor isn't overheated. The current level should be set as low as possible and then slowly increased over a long period of time. While this is being done, the temperature of the motor should be monitored to ensure it is not overheating. Page 13 of 36 Redi-Start MicroII Redi-View Dictionary Motor Protection/Overload Class Motor Protection/Overload Class/Overload (See Table Below) The overload parameter sets the class of the electronic overload. The starter stores the thermal overload value as a percentage value between 0 and 100%, with 0% representing a "cold" overload and 100% representing a tripped overload. When the overload is set to not available (NA), the electronic overload is disabled and another motor overload protection device must be supplied. When the overload is set to bypass (BYP), the electronic overload is disabled during starting and then the thermal content is charged to 90% once the starter gets up-to-speed. When the motor is up-to-speed, the RediStart Micro will use a class 10 overload for the motor protection. Values the overload can be set to; ·5 - class 5 overload · 10 - class 10 overload · 15 - class 15 overload · 20 - class 20 overload · 25 - class 25 overload · 30 - class 30 overload · NA - no thermal overload · BYP - overload bypassed during starting, class 10 once up-to-speed NOTE: The settings of class 5 ­ 30 are industry standard settings comparable to mechanical thermal overloads. The NA setting can be used when a single starter is starting multiple motors or the Redi-Start overload is redundant. The BYP setting is used for long starting applications such as centrifuges or high inertia fans to eliminate nuisance trips. Motor Protection/Line Currents Motor Protection/Line Current/% Imbalance (Min 10%, Max 40%, Default 15%) The percent imbalance parameter sets the allowable phase to average current difference that is allowed before the starter will shut down. The imbalance must be greater than the imbalance delay time before this will occur. The current imbalance for each phase is calculated as the percentage difference between the phase current and the average current. If the highest calculated current imbalance is greater than the current imbalance level, the starter will shut down the motor and display a fault 23 to fault 28 depending on the phase that has the out of range current. Motor Protection/Line Current/Imbalance Delay (Min 0. 1s, Max 90. 0s, Default 0. 5s) The imbalance delay parameter sets the time that the current imbalance must be greater than the percent imbalance parameter before a trip will occur. Motor Protection/Line Current/Current @ Stop Delay (Min 0. 1s, Max 10. 0s, Default 1. 5s) The current at stop delay parameter sets the time that a phase current must be greater than 5% of the motor FLA parameter, while the starter is in a stopped state, before a trip will occur. Page 14 of 36 Redi-Start MicroII Redi-View Dictionary Motor Protection/Line Current/% No Current @ Run (Min 2%, Max 40%, Default 10%) The percent no current at run parameter sets a low current operating level. If the current falls below this level, the RediStart Micro will shut down the starter and give a no current at run fault. [. . . ] Ratio (See Below) The CT ratio must be set to match the CT's (current transformers) supplied with the starter. This allows the starter to properly calculate the current supplied to the motor. These are custom 0. 2 amp secondary CTs specifically designed for use on the starter. The supplied CT ratio can be confirmed by reading the part number on the CT label. [. . . ]