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  1. How to I set up my 20A (PowerFlex 70) drive to follow a 4 to 20mA input?
  2. Can I use the 20-HIM-A0 (LED HIM) as a handheld unit?
  3. What is fault 24 and why is it not in my manual?
  4. How does the door mount kit work? Will I need to oder special cables?
  5. Are the Elapsed MWh (p009) and Elapsed Run Time (p010) parameters going to reset to zero if the drive is set back to factory defaults?
  6. Can I load my parameters to the user set and then take the HIM and then go download those parameters to a user set in a different drive?
  7. What is the proper analog in terminal impedance for the Powerflex 70?
  8. I have a PowerFlex 70 Frame E that won't physically accept the 115VAC digital input interface. What am I supposed to do?
  9. My STS light is flashing yellow. The manual says a Type 2 alarm exists. Checking P212 [Drive Alarm 2] does not indicate an alarm. What is the problem?
  10. I have my digital inputs setup for 2 wire control. The start and jog on the HIM does not work, why?

1.
Q? How to I set up my 20A (PowerFlex 70) drive to follow a 4 to 20mA input?
A! The first parameter that needs to be changed is P320 (Anlg In Cofig)to tell the drive the analog input will be a current input. The next parameter that needs to be programmed is P322,325 (Analog In x Hi)to 20mA. The last parameter that needs to be programmed is P323, 326 (Analog In x Lo) to 4mA. You would program P320 Bit 0, P322 and P323 if you are using Analog In 1. You would program P320 Bit 1, P325 and P326 if you are using Analog In 2.

2.
Q? Can I use the 20-HIM-A0 (LED HIM) as a handheld unit?
A! No. The 20-HIM-A0 (LED HIM) must be installed in the drive cradle for the HIM to function. If the LED HIM is hooked to a handheld cable, the HIM will not light up.

3.
Q? What is fault 24 and why is it not in my manual?
A! Fault 24 is the "Decel Inhibit Fault." This fault was not listed in the first manuals printed for the PowerFlex 70 drive, but are printed in the current circulation manuals.
This means that the drive is not following the commanded deceleration because it is attempting to limit bus voltage. You will want to verify that the input voltage is within the drive's limits. Verify the system ground impedance follows proper grounding techniques. Disable the bus regulation and/or add dynamic brake resistors and/or extend deceleration time. Parameter 238 bit 6 is the location to turn this fault on or off. By factory defaults this bit is on. Parameter 161, 162 and 160 are the bus regultation parameters that can be adjusted for application if the bus regulation is desired.

4.
Q? How does the door mount kit work? Will I need to order special cables?
A! The door mount HIMs are going to be available as a programmer only or a fully operational HIM. The HIM comes with a gasket and the necessary hardware for mounting. The HIM will already be structured into a bracket. Holes will need to be drilled for the screws and the HIM cable connection. The kit that includes the HIM will come with a 1 meter cable. If extra length is needed an extension cable will need to be ordered.

5.
Q? Are the Elapsed MWh (p009) and Elapsed Run Time (p010) parameters going to reset to zero if the drive is set back to factory defaults?
A! No, these parameters can only be reset via the [Reset Meters] parameter #200.

6.
Q? Can I load my parameters to the user set and then take the HIM and then download those parameters to a user set in a different drive?
A! The user sets are parameters stored in the drive memory for when one drive is performing different applications where the configuration of the parameters is different from application to application. The user sets allow for multiple sets of parameters to be stored and recalled when needed. This information is not stored in the HIM and cannot be transfered from one drive to another. The HIMs currently do not have this functionality.

7.
Q? What is the proper analog in terminal impedance for the Powerflex 70?
A! The documentation on the PowerFlex 70 Analog Inputs for voltage signals show input impedences of 100 ohm, 53k ohm, 89k ohm and 100k ohm depending on where you look. The proper impedance is 100k ohm. This is true for terminals 14 - 15 and 18 - 19.

8.
Q: I have a PowerFlex 70 Frame E that won't physically accept the 115VAC digital input interface. What am I supposed to do?
A: PowerFlex 70 Frame E drives manufactured prior to February 28th, 2005 had a plastic chassis that was not compatible with the 115VAC interface. If you have one of these drives with the plastic interference, and it needs to work with the 115VAC interface, Allen-Bradley will provide a replacement plastic chassis. Please contact AB drives Tech Support with the catalog number, serial number, and manufacturing date.

9.
Q: My STS light is flashing yellow. The manual says a Type 2 alarm exists. Checking P212 [Drive Alarm 2] does not indicate an alarm. What is the problem?
A:
The STS light will flash yellow if a digital input is set to “stop” and that input is in a low state.

10.
Q: I have my digital inputs setup for 2 wire control. The start and jog on the HIM does not work, why?
A: Setting the drive up in 2 wire control deactivates the HIM start and jog buttons.