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Document No. A6V10431169

May, 2016

Siemens Industry, Inc. Page 1 of 9

Document No. A6V10431169

Guide Specification for

Siemens BT300 HVAC Variable Frequency Drives

Division 23/26/29

PART 1 - GENERAL

1.01 Description

A. This specification covers the complete Variable Frequency Drive (VFD) consisting of a pulse width

modulated (PWM) inverter designed for use on a standard Type Design B induction motor. The drive shall

be manufactured by Siemens, be designed specifically for variable torque applications, and shall be

designated “BT300 Series” or approved equal.

B. The drive manufacturer shall supply the AC drives and all necessary controls as herein specified. The

manufacturer shall have been engaged in the production of this type of equipment for a minimum of

fifteen years.

1.02 Quality Assurance

A. Referenced Standards

1. Underwriters Laboratories

a. UL and cUL approved

b. UL508A

c. UL508C

2. National Electrical Manufacturer’s Association (NEMA)

a. ICS 7.0 AC Adjustable Speed Drives.

3. International Electro technical Commission (IEC)

a. EN/IEC 61800-3 First and Second Environment.

4. National Electric Code (NEC)

a. NEC 430.120, Adjustable-Speed Drive Systems.

Summary of content (9 pages)

PAGE 1
Document No. A6V10431169 May, 2016 Guide Specification for Siemens BT300 HVAC Variable Frequency Drives Division 23/26/29 PART 1 - GENERAL 1.01 Description A. This specification covers the complete Variable Frequency Drive (VFD) consisting of a pulse width modulated (PWM) inverter designed for use on a standard Type Design B induction motor. The drive shall be manufactured by Siemens, be designed specifically for variable torque applications, and shall be designated “BT300 Series” or approved equal. B.
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5. International Building Code a. Seismic IBC-2012 Section 1705.12 and CBC 2013 Section 1705.12. 6. UL 1995 Plenum Rating 7. RoHS 8. NEMA ICS 3.1 – Safety Standards for Construction and Guide for Selection, Installation and Operation of Variable Frequency Drive Systems. 9. NEMA 250 Enclosures for Electrical Equipment (1000 Volts Maximum). B. Testing 1. The VFD shall have undergone extensive testing from design to deployment.
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1.04 Delivery, Storage and Handling A. Deliver, store, protect and handle products to site, under provisions of Section 01610. B. Accept VFD on site in original factory packing. Inspect for damage. C. Store in a clean, dry space. Maintain factory wrapping or an additional cover to protect units from dirt, water, construction debris and traffic. D. Handle in accordance with manufacturer’s written instructions to avoid damage to components, enclosure and finish. Part 2 – PRODUCTS 2.
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G. All VFDs shall have the following standard features: 1. All VFDs shall have the same customer interface, including digital display and keypad, regardless of horsepower rating and voltage. a. The keypad is to be used for local control, for setting all parameters and for stepping through the displays and menus. The keypad shall be removable, capable of remote mounting and have its own non-volatile memory.
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11. The VFDs shall include a Quick Start-up wizard that leads the user through the typical HVAC required parameters. 12. The VFD shall have the ability to automatically restart after an overcurrent, overvoltage, undervoltage, or loss of input signal protective trip. The number of restart attempts, trial time, and time between reset attempts shall be programmable. 13.
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2. A custom PID preset for HVAC and fluid systems, allows a pressure or flow signal to be connected to the VFD, using the microprocessor in the VFD for the closed loop control. The VFD shall have 250 mA of 24 Vdc auxiliary power and be capable of loop powering a transmitter supplied by others. The PID setpoint shall be adjustable from the VFD keypad, analog inputs, digital inputs, or over the communications bus. A sleep mode shall be included in the PID functions.
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f. Mains supervision g. Motor phase supervision h. Motor stall protection i. Motor overload protection j. Motor underload protection k. Short-circuit protection of +24V 18. Speed Command Input shall be accomplished using any of the following: a. Keypad b. Two (2) Analog inputs, each capable of accepting a 0 to 20mA, 4 to 20mA, 0 to 10V, 2 to 10V signal, and direct NI 1000 temperature sensor input. c. Serial Communications I. Communications 1. The VFD shall have an RS-485 and Ethernet as standard.
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K. Bypass 1. The bypass shall be furnished and mounted by the drive manufacturer as defined on the VFD schedule. All VFD with bypass configurations shall be UL Listed as a complete assembly and carry a UL508 label. 2. A complete factory wired and tested bypass system consisting of a drive output and bypass contactor, along with a mechanical service switch to isolate the drive from the utility power. A door interlocked, padlockable circuit breaker or main disconnect with drive fuses shall be standard. 3.
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17. Two safety inputs shall be available for customer connecting. If either of these inputs opens, the electronic bypass will not operate the motor in bypass or drive mode. These inputs are typically used for such things as fire alarm and freeze stat. Part 3 – EXECUTION 3.01 Installation A. Installation shall be the responsibility of the mechanical contractor. The contractor shall install the drive in accordance with the recommendations of the VFD manufacturer as outlined in the installation manual. B.