Technogym BIOSTRENGTH LINE, Service Maintenance Manual

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BIOSTRENGTH LINE: Service & Maintenance manual - rev. 2.1
Page 8.1
8. ADJUSTMENTS
8.1. ADJUSTING THE WEIGHT STACK PLATE SELECTION
The weight stack plates must be selected correctly in order for the machine to carry out the exercise
without rattling caused by the plate springs which, if not correctly compressed, touch the cross
sinker.
The plate selection may be adjusted using a few parameters from the procedure described in
paragraph 9.2. “Configuring the technical parameters”:
•
the OFFSET: see paragraph 9.2.2. ;
•
the distance between plates: see paragraph 9.2.6. ;
•
the weight stack motor inertia: see paragraph 9.2.4. .
To understand how these parameters affect the adjustment system, we must first clarify how the
machine works: during reset, the machine seeks out the zero sensor position. Once it is found, it
moves the weight stack selection system by a preset number of pulses until the weight is set to 5 Kg
(10 lbs). Subsequent selections of different weights are all related to forward or backward
movements by the motor by a preset number of pulses.
8.1.1. OFFSET
This parameter, set to 1000 by default, affects the position of the weight stack selection brush after
the reset. Once it has detected the zero sensor, the machine moves the selection system by an
amount equal to:
total number of weight stack (OFFSET – 1000)
This tells us that:
1. The unit of measure for the OFFSET parameter is pulses of the weight stack motor encoder.
Mounting a different motor would have significant effects on this setting;
To move the brush by 1 mm, the OFFSET value must be changed by approximately 5
units.
2. Since the default setting is 1000, in ideal conditions 5 Kg. (10 lbs) are selected by moving the
weight stack selection system by a number of pulses equal to the total number of pulses of the
weight stack. Obviously, in real conditions this value must be changed:
•
The selection brush moves up as the OFFSET value is increased;
•
The selection brush moves down as the OFFSET value is reduced;