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FAQ
May I use my ER/NER/SNER Series hoist outside?
Do I need to adjust the “Guardian Smart Brake” on my new ER2 hoist?
Can I install a VFD from another manufacturer in my new ER2?
My ER2 hoist won’t work and the VFD displays Hbb. What should I do?
May I use my ER/NER/SNER Series hoist outside?
Answer:
The ER/NER/SNER Series hoist meets IP55 standards, and as such, is water and dust resistant. It is also designed for operation in temperature ranges of -4 to +104 degrees Fahrenheit at humidity levels of 85% of less. These hoists may be operated outside without any detrimental effects. When not in use, however, the hoist should be protected from the elements like any high quality piece of equipment, It is strongly recommended that the hoist be sheltered from outside weather when not in use.
Do I need to adjust the “Guardian Smart Brake” on my new ER2 hoist?
Answer:
The Guardian Smart Brake requires no adjustment, and should never be disassembled. As the brake disk wears, the brake gap will increase. Brake gap should be measured per Table 5-7 in the owner’s manual, and the brake assembly should be replaced when the brake gap reaches the discard limits. The Guardian Smart Brake is guaranteed for 10 years from original purchase date.
Can I install a VFD from another manufacturer in my new ER2?
Answer:
The ER2 VFD contains proprietary hardware and software to ensure safe and proper operation of the hoist motor and brake. Installation of a different VFD will not permit proper operation of the new Guardian Smart Brake or the motor, and will void any and all warranties.
My ER2 hoist won’t work and the VFD displays Hbb. What should I do?
Answer:
There are several ways the Hbb signal can be triggered on the ER2 VFD. Below is a list of possible causes.
•Make sure the e-stop is released
This is one of the most common causes of Hbb. Whenever the red mushroom button is pressed in, the VFD is unresponsive and flashes Hbb.
•Check the interface board fuse
If there is a loose connection or if the fuse is blown, the VFD will display Hbb.
•Check the connection between HC and H1 terminals
Check the wiring between the HC and H1 terminal on VFD and the interface board (they are blue wires labeled with HC and H1 on CN12).
•Verify control voltage on the secondary side of the transformer and the connections between the transformer and the interface board
Check the wiring from CN13 on the interface board to the transformer.
•Check the pendant wiring
Make sure that connection between pendant and the 8P plug is secure (green and black wires; #11 and #12 in pendant to #5 and #1 on 8P plug). If this connection is secure, check the connection to orange and black of CN11 on interface board (orange and black coming out of #1 and #5 of 8P socket and going to #4 and #5 of CN11).
