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<br />iv. Motor torque (percent). <br />v. Motor speed (rpm). <br />vi. Set-point frequency (Hz). <br />5) Remote Indication Interface: A minimum of 2 dry circuit relay <br />outputs (120-V AC, 1 A) for remote indication of the following: <br />a) Motor running. <br />b) Set-point speed reached. <br />c) Fault and warning indication (overtemperature or <br />overcurrent). <br />d) PID high or low speed limits reached. <br />r. Communications: Provide an RS485 interface allowing VFC to be used <br />with an external system within a multidrop LAN configuration. Interface <br />will allow all parameter settings of VFC to be programmed via BMS <br />control. Provide capability for VFC to retain these settings within the <br />nonvolatile memory. <br />s. Manual Bypass: Arrange magnetic contactor to safely transfer motor <br />between controller output and bypass controller circuit when motor is at <br />zero speed. Controller-oft-bypass selector switch sets mode, and <br />indicator lights give indication of mode selected. Unit will be capable of <br />stable operation (starting, stopping, and running), with motor completely <br />disconnected from controller (no load). <br />t. Isolating Switch: Non-load break switch arranged to isolate VFC and <br />permit safe troubleshooting and testing, both energized and de- <br />energized, while motor is operating in bypass mode. <br />u. Bypass Controller: NEMA ICS 2, full-voltage, nonreversing enclosed <br />controller with across-the-Iine starting capability in manual-bypass mode. <br />Provide motor overload protection under both modes of operation with <br />control logic that allows common start-stop capability in either mode. <br />v. Integral Disconnecting Means: NEMA AB 1, instantaneous-trip circuit <br />breaker AB 1, molded-case switch with lockable handle. <br /> <br />F. Odor Control Fan Schedule: <br />1. At the WWTP, the PROPONENT shall provide a minimum offourfans, three duty <br />and one standby. <br />2. At the remote lift station sites, the PROPONENT shall provide a minimum of two <br />fans, one duty and one standby. <br /> <br />G. Access Doors: Raised type, stud mounted access doors with gaskets. Studs will be <br />imbedded and encapsulated in FRP housing. <br /> <br />H. Odor control fan mounting will be AMCA standard Arrangement 84 up to <br />40 horsepower, 50 horsepower and above will be Arrangement 1 with slide rail type <br />motor mounting. Fan base will be bolted directly to equipment slab and shop painted <br />with an epoxy coating for outsidel corrosive application. <br /> <br />I. Drains: Provide drains at low point of scroll, 1-inch pipe coupling welded to <br />housing with threaded corrosion resistant plug. <br /> <br />J. <br /> <br />Drive: Matched V-belts and adjustable sheave pulleys will be cast steel, sized for 1.2 <br />service factor. <br /> <br />I <br /> <br />I <br /> <br />I <br />