Basic Documentation

Page 4 of 9 Siemens Industry, Inc.
Document No. A6V10431169
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. The keypad shall be capable of uploading and downloading of
parameter settings as an aid for start-up of multiple VFDs.
2. The keypad shall include Hand, Auto, and Off selections. When in Hand mode, the VFD will be
started and the speed will be controlled from the up/down arrows. When in Off mode, the VFD will be
stopped. When in Auto mode, the VFD will start using an external contact closure, and the VFD
speed will be controlled using an external speed reference. The drive shall incorporate “bumpless
transfer” of speed reference when switching between Auto and Hand modes.
3. All circuit boards shall meet air quality standards, IEC 60068-2-60 H2S (hydrogen sulfide) and SO
2
(sulfur dioxide); chemical vapors IEC 60721-3-3, unit in operation in class 3C2 and mechanical
particles to IEC 60721-3-3, class 3S3.
4. A built-in time clock shall be housed in the keypad. The clock shall have a battery back-up with 10
years minimum life span, The clock shall be used to date and time-stamp faults and record operating
parameters at the time of fault.
5. The VFD shall have start-up wizards visible on the keypad for quick access to application macros
specifically designed to facilitate start-up.
6. The user shall be able to define any parameter as a favorite using the keypad.
7. The VFD shall have cooling fans designed to be replaced without removing the VFD from the wall or
removing the VFD enclosure. The cooling fan shall have a design life of 10 years.
8. The VFD shall include DC bus capacitors which do not require conditioning prior to installation. The
capacitors shall have an infinite shelf life.
9. The VFD cooling fans shall operate on start command or based on drive temperature. The user shall
have the ability to choose cooling fan operation control.
10. The VFD shall monitor and display using the keypad’s nine (9) parameters at one time without the
need to scroll through multiple screens. Each parameter shall be user-defined. The following is a
sample of the parameters which can be monitored and viewed using the keypad. All parameters
viewed from the list below shall be capable of being displayed at all times. The display shall be in
complete English words (alpha-numeric codes are not acceptable).
Output Frequency
Motor Speed (RPM, %, or Engineering units)
Motor Current
Calculated Motor Torque
Calculated Motor Power (kW)
DC Bus Voltage
Heatsink Temperature (deg F)
Output Voltage
Analog Input Values
Analog Output Value
Keypad Reference Values
Elapsed Time Meter (resettable)
KWh meter (resettable)
MWh meter
Digital input status
Digital output status