HB Series 2 Terminal Block “Cheat Sheet”

The HB Series 2 machines are some of the most popular Hy-Brid Lifts, but they can be tricky to master when it comes to their voltage readings. When troubleshooting these lifts, it’s much easier to identify your problem when you know what voltage each terminal is supposed to have—and what each terminal is responsible for. To keep your machine running at peak performance, we created this quick “cheat sheet” that includes the voltage readings you should expect to see on your HB Series 2 scissor lift. Before reading it, here are a few things to keep in mind:

• When checking voltage in the lower controls, the black wire from the hour meter is a good source for your ground. 
• If you use the battery on the lower control side of the machine, you’re only using a 12V ground and won’t get a proper 24V reading. 

Terminal Number	What It Is	Voltage Reading
1	Pot Wiper	Driving Forward: 4.8V In Neutral: 2.5V In Reverse: 0.4V
2	Pot High, Speed Pot	Driving Forward: 4.8V Driving Reverse: 4.8V
3	Pot Low	0V
4	Joystick Trigger	When Squeezing: 24V
5	Power from Low Control E-Stop	24V
6	Right Steer Limit Switch	Turning Right: 24V
7	Left Steer Limit Switch	Turning Left: 24V
8	Descent Voltage	When Lowering the Platform: 24V
9	Fast & Slow Drive Signal	Voltage Will Vary for Driving Speed
10	Tilt Alarm Power	24V
11-12	Elevation Power After Limit Switches	When Elevating the Platform: 24V
13	Elevation Power Before Limit Switches	When Elevating the Platform: 24V
14	Upper Control E-Stop Return Voltage	24V
15	Lower Control Rocker Switch & Relay Power	24V
16	Upper Control Power	24V
17	Empty	Empty
18	Key Switch Power	24V
19	Main Power Coming from Pump	24V
20-22	Grounds	Grounds
23-30	Brakes	Brakes

Even if your machine is running properly, be sure to keep this sheet handy for QA checks. If your machine is down and the voltage is off, give our service team a call at 262-297-5195 and we’ll get you back up and running.

PRINT CHEAT SHEET