3 triple eccentric drive, 8 electronic boards, Triple eccentric drive – Eppendorf 2150 Digital Platform Shaker User Manual
Page 15: Electronic boards
Product description
New Brunswick Digital Platform Shaker Innova® 2100/2150
English (EN)
15
3.7.3
Triple eccentric drive
The drive mechanism (see following Figure) uses a counterweight system to stabilize the rotary motion
produced during operation. When the work load moves in one direction, opposing forces are generated to
stabilize the shaker. This action will help eliminate the problem of “walking” which may occur with less
precisely balanced instruments. Vibration is minimized and the life of the unit is extended.
Abb. 3-4: Counterbalanced drive mechanism
Fig. 3-4:
Counterbalanced drive mechanism
3.8
Electronic boards
The main control board for Innova shakers has the following functions:
• Non-volatile memory for storage of key parameters during power interruption;
• Speed sensing, electronic commutation, and power control for the brushless DC drive motor;
• Maintains an elapsed running time clock;
1
Upper bearing housing
2
Shaker platform
3
Upper ball bearing
4
Ball bearing
5
Pulley with counterweight
6
Eccentric drive shaft
7
Lower bearing housing
2
3
1
5
4
6
7