HEIDENHAIN TNC 150 B Mounting Instructions page 18

b) Analogue voltage output of spindle speeds
outputs
Spindle analogue voltage
f. 10 volts
0 volt
Gear ratio 1
2
3
4
5
6
7
8
S-Strobe
Auxiliary function
completed
Caution
PLC-Allocation
-
-
A7
A8
A9
A10
All
Al2
Al3
Al4
A20
El7
TNC 150 H
Multipoint
connector
TNC 150 Q
Multipoint
connector PLC-
Power board
TNC 150 Q
Multipoint
connector Control
J4/9
-
J1/9
J4/10
-
Jl/lO
J2/2
Jll8
-
J2/3 J1/9
-
J2/4
Jll9
-
J2/7
-
J2/8
-
J2/9
-
J3/3
-
J5/6
The O-volt nominal value output must be grounded (see sectiol 3.13 Wiring). For activation of the spindle with
DC-servodrive, the control provides a DC voltage of 0 to + 10 volts. The polarity of the output voltage is
determined by parameter MPI 72. With the aid of machine parameters 78 to 85, up to 8 gear ratios may be
defined. This should be commenced with the entry of the ratio with the lowest speed. The max. voltage at the
input of the servo-amplifier which is programmed with machine parameter 8,7. The S-gating signal is provided
with each gear ratio.
After verification of the feedback signal "auxiliary function completed" and spindle status MO3 or M04, the
nominal value voltage with the ramp as programmed with maciine parameter 168 are output. No nominal value
voltage output takes place with M05.
The nominal value voltage for the spindle drive during gear change is determined with MP70. For the duration
of gear change, the polarity of this voltage MP70 is switched o>/er in accordance with parameters 124 and 125.
The control is fitted with an S-override potentiometer. The min. and max. voltage values can be programmed
with machine parameters (Nos. 86 to 89 and 184).
3.5 Emergency Stop
In/Output
Emergency Stop (Output)
Emergency stop-test ( Input)
PLC-Allocation TNC 150 B TNC15OQ
Multipoint Multipoint connector
connector PLC-Power board
-
J1/8 J3/10
E8 J5/8 J4/4
Important functions of the TNC 150 are under constant supenlision through self-diagnostics (electronic
subassemblies such as microprocessors, the memory read/write-store, positioning systems, transducers etc.). If
a fault is detected, it is indicated as a flashing display in the plain language dialogue. On output of fault-
indication, the "emergency stop" contact opens.
The "Emergency Stop" condition of TNC 150 can only be carcelled by switching off the mains voltage-provided
that the fault has been rectified. A special mains switch may be necessary for the control only!
The emergency stop contact must cut-out the 24 V auxiliary voltage in the machine interface. Due to the
significance of the emergency stop contact for safety reasons, its function is monitored by the control with each
switch-on of power (see flow chart).
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