19 – 282 HEIDENHAIN Service Manual iTNC 530 HSCI
Notes and
preparatory
action
CC 61xx:
If axes/spindles with different power modules and motors are supposed to be swapped, these
devices (if equipped with electronic ID labels) would try to log on to the control during start-up.
A new assignment would be requested according to the changed wiring, even before the service
engineer can edit the machine parameter values. To avoid this, deactivate the evaluation of the
electronic ID labels with MP7690 before the exchange.
Use the position encoder input of a functioning axis/spindle.
(The permanently assigned PWM output or motor output must be connected, since - depending on
the configuration of single-speed and double-speed control loops - non-connected outputs may not
be active.)
The permanently assigned speed inputs and PWM or motor outputs must be swapped, too!
To find the correct machine parameters in the MP2xxx.y group, call the machine parameters MP130
(axes) and MP131/132 (spindles). Here you find the assignments of the axes/spindles to the
respective indexes 'y' of the MP2xxx.y group.
The same PWM frequency should be set for axes and spindles to be swapped!
If there are different PWM frequencies in the machine parameters MP2180.x , you may enter 5 kHz
for the axes/spindles for testing.
CC 61xx:
If the swapped PWM outputs are on a compact inverter or a two-axis module, the control generates
the Power interrupted message as usual.
If, however, the swapped PWM outputs lead to two different power modules (different ID or SN),
the control generates the message Hardware/firmware change detected during start-up.
--> See ”Reading out power module data” on page 21 – 338.
UEC 11x:
Check, whether the axes to be swapped have the same rated current (MP2100.x and power-module
table).
If the rated current is not the same, or if an axis is swapped with a spindle, the power output stages
need to be assigned correctly.
Due to the fixed assignment, the interchange method cannot be used independently for position
encoders, speed encoders or PWM/motor outputs. The axes must be swapped altogether.
Swapping power output stages with different rated currents for testing and not assigning
them correctly (MP2100.x) may cause damage to the machine or personal injury!
Always secure vertical axes to prevent them from falling down before you perform tests on these
axes!
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