Bosch Rexroth Tightening System 350 - Nutrunner Test

624/641 Bosch Rexroth AG | Tightening Technology 3 608 878 300
System 350 | 3 608 878 300/2019-03
7.7.5 Nutrunner test
Fig. 7–44: ErgoSpin, SlimLine type
7.7.5.1 Nutrunner start
The ErgoSpin is started by actuating the start switch (1) (see Figure 7–44).
Releasing the start switch (1) aborts the tightening process. The aborted tightening process is evaluated
by the tightening controller:
• If the torque threshold for play on the start switch (default value: 5 % of the nominal torque of the
hand-held nutrunner) was not exceeded, the tightening is not evaluated. This process is interpreted
as "Play at start switch" and ignored (i.e. OK = 0 and NOK = 0, both LEDs are off).
• If the torque threshold was exceeded, the tightening is evaluated as faulty (NOK) and the red LEDs
are illuminated (see Acknowledging a faulty tightening process (page 625)).
7.7.5.2 CW/CCW reversal switch
The direction of rotation for the nutrunner can be changed to tighten and loosen bolts. The direction is
changed using the CW/CCW reversal switch (2) on the hand-held nutrunner (see Figure 7–44).
1Start switch
2 CW/CCW reversal switch
3 Tool button
4 Socket for the ErgoSpin connection cable
1
2
3
4
Press the start switch (1) on the hand-held nutrunner and hold until the hand-held nutrunner automatically
switches off.
The direction of rotation for the nutrunner is determined by the algebraic sign for the speed in the
tightening program. The description in this section applies in case a positive speed is set in the tightening
program. With a negative speed, the description for clockwise/counterclockwise revolution has inverse
effects.