HEIDENHAIN TNC 151 Q Mounting Instructions page 30

3.14 Nominal value-outputs
output
X + 10 volts
0 volt
Y + 10 volts
0 volt
Z + 10 volts
0 volt
TNC 151 B / TNC 151 Q /
TNC 155 B TNC 155 Q
Multipoint
Multipoint connector
connector control
J4/1 Jl/l
J4/2 Jll2
J4/3 JlI3
J4/4 Jll4
J4/5 JlI5
J4/6 Jll6
IV + 10 volts J4/7 Jll7
0 volt J4/8 Jll8
-
Caution:
The O-volt nominal value-outputs must be grounded at the control (see grounding diagrams 3.15,3.16).
For interface wiring, shielded cables must be used for nominal value-voltages.
The maximum permissible cable length is 20 m with a cross-section of the cores 2 x 0.5 mm2.
Ramp characteristic
When traversing, the machine traversing speed is controlled; in particular, during acceleration and deceleration.
Via machine parameters, the TNC 151/TNC 155 permi-ts programming of two different ramp characteristics
(each ramp identical for all axes):
.If machine parameter 60 is programmed with 'IO", a "square root characteristic" is -formed. This ramp
characteristic enables the machine to operate with a very small trailing error.
.If machine parameter 60 is programmed with "I",
a ramp characteristic with a "kink" is provided. The control
operates with this characteristic in trailing (lag) operation.
Further information is provided in the section "Machine Parameter"
The "square root characteristic" is selected when high contouring accuracy with high speed is required or despite a
fixed KV-value, the machine acceleration is influenced via MP 54.
The "linear characteristic" is selected if the contouring accuracy is insignificant at high speed and time-saving
acceleration procedu,res are required. With this, the max. acceleration of the machine is also limited via MP 54.
In the "manual",
" programming" and "electronic handwheel"-modes, the TNC 151/TNC 155 always operates
with the linear characteristic, i.e. this characteristic must be adjusted even if operation takes place in the other
modes using the "square root characteristic".
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