HEIDENHAIN TNC 370 D Manual

zadsnnn
Technical Information

 ¬

NC Software 286 02x xx

July 02 Specifications TNC 370 D 1–1
Contents
1 Specifications 1–1
2 Components 2–4
3 Mounting and Electrical Installation 3–6
3.1 Electrical Noise Immunity 3–6
3.2 Heat Generation and Cooling 3–7
3.3 Humidity 3–7
3.4 Mechanical Vibration 3–7
3.5 Degree of Protection 3–7
3.6 Mounting Position 3–8
3.7 Connection Overview 3–10
3.7.1 LE 370 D 3–10
3.7.2 Power Supply 3–11
3.7.3 Measuring System Inputs 3–13
3.7.4 Reference Signal for the Spindle 3–14
3.7.5 Supply voltage for "Control-is-ready" 3–14
3.7.6 Analog Nominal Value Output 3–15
3.7.7 Switching Inputs 24 Vdc for the PLC 3–17
3.7.8 Switching Outputs 24 Vdc for the PLC 3–20
3.7.9 Machine Operating Panel 3–23
3.7.10 TNC Keyboard 3–24
3.7.11 Visual Display Unit 3–26
3.7.12 PLC input/output unit PL 410 B/ PL 405 B 3–27
3.7.13 Touch Trigger Probes 3–28
3.7.14 RS-232-C/V.24 Data Interface 3–31
3.7.15 Handwheel Input 3–32
3.7.16 Analog Inputs 3–37
3.8 Visual Display Unit BF 370 B 3–40
3.9 Mounting Dimensions 3–41
3.10 Cable overview 3–44
3.11 Grounding plan 3–45
4.1 WhatIs aMachine Parameter? 4–47
4.2 Input and Output of Machine Parameters 4–48
4.2.1 Input Format 4–48
4.2.2 Activating the Machine Parameter Settings 4–48
4.2.3 Changing the Input Values 4–49
4.3 Listof Machine Parameters 4–52
4.3.1 Encoders and Machine 4–52
4.4 Positioning 4–57
4.5 Operation with Velocity Feedforward 4–59
4.6 Operation with Servo Lag 4–60
4.7 Main Spindle 4–60
4.8 Integrated PLC 4–64

1–2 TNC 370 D Specifications July 02
4.9 Adaptation of the Data Interfaces 4–66
4.10 3-D Touch Probe 4–67
4.11 Tool Measurement with TT 130 4–68
4.12 Tapping 4–70
4.13 Displayand Operation 4–71
4.14 Machining and Program Run 4–75
4.15 Hardware 4–79
5 List of Markers and Words 5–81
5.1 List of Markers 5–81
5.2 List of Words 5–85
6 List of Modules 6–88

July 02 Specifications TNC 370 D 1–1
1 Specifications
Axes 3 or 4 and spindle S;
All axes can be defined as NC or PLC axes
Program memory 128 KB (64 NC programs with a total of approx. 6000 blocks)
Input resolution and
display step 1 µm for linear axes 0.001 degrees for rotary axes
Interpolation
Linear interpolation 3 of 4 axes
Circular interpolation 2 of 4 axes
Helix Superimposition of circular arcs and straight lines
Tapping without
floating tap holder1) Yes
Block processing time2) 6 ms
Axis control Velocity feedforward control;
Operation with servo lag
Position control
resolution
Fehler!
Cycle time path
interpolation 6 ms
Error compensation ·Linear axis error
·Multipoint axis error
·Backlash
·Reversal spikes during circular motion
·Thermal expansion
·Offset
Data interface RS–232–C/ V.24, max. 115 200 baud
1) This function must be implemented by the machine manufacturer.
2) 3-D straight lines without radius compensation

1–2 TNC 370 D Specifications July 02
Integral PLC
PLC memory Approx. 8 000 commands
PLC cycle time 24 ms
LE LE + PL 410 B LE + 2 PL 410 B
Analog input PT 100 Analog input PT 100
without with without with
PLC inputs 24 Vdc 56 119 119 183 183
PLC outputs 24 Vdc 31 62 62 93 93
Analog inputs ±10 V 3 (option) – 7 – 11
Inputs for PT100 thermistors 2 (option) – 6 – 10
"Control-is-ready" signal output 1 2 3
"Control-is-ready" signal input 1 1 1
Power supply for logic
Power supply for PLC
400 Vac ±10 %
24 Vdc
Weight 6 kg

July 02 Specifications TNC 370 D 1–3
User Functions
Program input In HEIDENHAIN conversational programming and according to ISO
Position data Nominal positions in Cartesian or polar coordinates, dimensional data
absolute or incremental, display and input in mm or inches
Subprogramming Program section repeat, subprograms, program calls
Parallel operation Creation of a program while another program is being run
Fixed cycles ·Peck drilling, tapping, slot milling, rectangular and circular pockets,
contour pockets
·OEM cycles
Coordinate
transformation
·Shift, rotation, mirror, scaling (axis-specific)
Q parameters
for programming using
variables
·Mathematical functions =, +,–, *, /, sin a, cos a, angle afrom sin aand
cos a, ,a, ,a² + b², tan a, arc sin, arc cos, arc tan, an, en, ln, log,
absolute value of a number, the constant p, negation, truncation
before or after decimal point
·Logical comparisons (=, ¹, <, >)
·Parentheses
Tools Compensation Tool radius in the working plane
and tool length
Management Tool table for max. 256 tools with
flexible pocket coding, tool-life
monitoring and sister tool
organization
FK free contour
programming FK free contour programming in HEIDENHAIN plain language with
graphic support for non NC-
dimensioned workpieces
Return to contour/
Mid-program startup Possible
Position capture Actual positions are transferred
directly to the NC programs
Datum tables Tables with 256 datums
Pattern Tables with 256 datums
Test graphics
Display modes Graphic simulation of machining process
·Plan view
·view in three planes
·3-D view
·Detail enlargement

2–4 TNC 370 D Components July 02
2 Components
LE 370 D logic unit
Id. Nr. 337 526-xx
BF 370 B visual display unit
Id. Nr. 288 708-04
TE 370 keyboard unit
Id. Nr. 288 713-01
LE in M design for analog axis control with integrated power
supply
Visual display unit with flat-panel display
(monochrome, 192 mm x 120 mm)
Keyboard unit with integrated handwheel and machine
operating keys
Accessories
PLC input/output unit PL 410 B
Id. Nr. 263 371 12
PLC input/output unit PL 410 B
Id. Nr. 263 371-02
PLC input/output unit PL 405 B
Id. Nr. 263 371 21
64 inputs 24 Vdc
31 outputs 24 Vdc
64 inputs 24 Vdc
31 outputs 24 Vdc
4 analog inputs ±10 V
4 inputs for PT100 thermistors
32 inputs 24 Vdc
15 outputs 24 Vdc
TS 220 touch probe
Id. Nr. 293 488-xx
TS 220/LE adapter cable
Id. Nr. 274 543-xx
TS 630 touch probe
Id. Nr. 293 714-xx
EA 550 receiver unit
Id. Nr. 262 904-01
EA 550/LE adapter cable
Id. Nr. 310 197-xx
TT 130 touch probe
Id.-Nr. 296 537-xx
TS 130/LE adapter cable
Id. Nr. 335 332-xx
Triggering touch probe, transmission via cable
Adapter cable for connecting the touch probe to the logic unit
Triggering touch probe, infrared transmission, omnidirectional
transmission
Receiver unit for trigger signals
Adapter cable for connecting the EA 550 receiver unit to the
logic unit
Triggering touch probe, transmission via cable, for tool
measurement
Adapter cable for connecting the touch probe to the logic unit

July 02 Components TNC 370 D 2–5
HR 410 handwheel
Id. Nr. 296 469-xx
Connecting cable to handwheel
Id. Nr. 312 879-01
Adapter cable HR 410/LE
Id. Nr. 296 466-xx
HR 130 handwheel
Id. Nr. 254 040-05
Portable electronic handwheel
Spiral cable 3m
Adapter cable for connecting the spiral cable, emergency stop
and permissive keys
Integral handwheel

3–6 TNC 370 D Mounting and Electrical Installation July 02
3 Mounting and Electrical Installation
3.1 Electrical Noise Immunity
Location for Use
This device corresponds to Class A according to EN 55022 and is intended primarily for operation in
industrially zoned areas.
Remember that the vulnerability of electronic equipment to noise increases with faster signal
processing and higher sensitivity. Protect your equipment by observing the following rules and
recommendations.
Noise voltages are mainly produced and transmitted by capacitive and inductive coupling.
Electrical noise can be picked up by the inputs and outputs to the equipment, and the cabling.
Likely sources of interference are:
· Strong magnetic fields from transformers and electric motors
· Relays, contactors and solenoid valves
· High-frequency equipment, pulse equipment and stray magnetic fields from switch-mode
power supplies
· Mains leads and leads to the above equipment
Electrical interference can be avoided by:
· A minimum distance of 20 cm between the logic unit (and its leads) and interfering equipment.
· A minimum distance of 10 cm between the logic unit (and its leads) and cables carrying
interference signals. (Where signal cables and cables that carry interference signals are laid
together in metallic ducting, adequate decoupling can be achieved by using a grounded
separation shield.)
· Shielding according to IEC 742 EN 50 178
· Potential compensating lines — Ƴ6 mm²/10 mm² (see Grounding Plan)
· Use of original HEIDENHAIN cables, connectors and couplings.

July 02 Mounting and Electrical Installation TNC 370 D 3–7
3.2 Heat Generation and Cooling
Please note that the reliability of electronic equipment is greatly reduced by continuous operation at
high temperatures. Be sure to make the necessary arrangements to keep within the permissible
ambient temperature range.
Permissible ambient temperature in operation: 0 °C to 45 °C (32 to 113 °F)
The following means may be employed to ensure adequate heat removal:
· Provide sufficient space for air circulation.
· Build in a fan to circulate the air inside the control cabinet. The fan must reinforce the natural
convection. It must be mounted so that the warm air is extracted from the logic unit
and no pre-warmed air is blown into the unit. The warmed air should flow over surfaces that
have good thermal conductivity to the external surroundings (for example sheet metal).
· For a closed steel housing without assisted cooling, the figure for heat conduction is 3 Watt/m²
of surface per °C air temperature difference between inside and outside.
· Use of a heat exchanger with separate internal and external circulation.
· Cool by blowing external air through the control cabinet to replace the internal air. In this case
the fan must be mounted so that the warm air is extracted from the control
cabinet and only filtered air can be drawn in. HEIDENHAIN advises against this method of
cooling, since the function and reliability of electronic assemblies are adversely affected by
contaminated air (fine dust, vapors, etc.). Besides these disadvantages, a filter that is not
adequately serviced leads to a loss in cooling efficiency. Regular servicing is therefore vital.
3.3 Humidity
Permissible humidity: < 75% in continuous operation,
< 95% for not more than 30 days p.a. (randomly distributed).
In tropical areas it is recommended that the TNC not be switched off, so that condensation is
avoided on the circuit boards. The heat generation prevents condensation and has no further
disadvantages.
3.4 Mechanical Vibration
Permissible vibration: < 0.5 m/s2
3.5 Degree of Protection
Visual display unit when mounted Protection class IP54
Keyboard unit when mounted Protection class IP54
HR 410 handwheel Protection class IP54
IP54 = Protection against dust and splashwater

3–8 TNC 370 D Mounting and Electrical Installation July 02
3.6 Mounting Position
Note the following fundamental points on mounting:
· Mechanical accessibility
· Permissible environmental conditions
· Electrical noise immunity
· The electrical regulations that are in force in your country
Visual Display Unit BF 370 B
The required clearance for air circulation is shown in the dimension drawing in the Appendix!

Mounting Position of LE 370 D
Id. Nr.
Free space for air
circulation!
Leave space for
servicing
Free space for
air circulation
and servicing
Leave space for
servicing.
Connecting cables must
be laid in a way that allows
the LE to be opened!
July 02 Mounting and Electrical Installation TNC 370 D 3–9

3.7 Connection Overview
3.7.1 LE 370 D
X1
to
X4 Position encoder
X6 Encoder for spindle position
X8 Nominal value output
X12 Triggering touch probe for workpiece
measurement
X13 Triggering touch probe for tool measurement
X21 RS-232-C/V24 data interface
X23 Handwheel input
X30 Reference signal for spindle
X41 PLC output
X42 PLC input
X44 PLC power supply
X43 Flat-panel display BF 370 B
X45 TNC keyboard
X46 Machine operating panel
X47 PLC expansion PL410B/PL405B
X48 PLC analog input
X31 NC power supply
B Signal ground
Protective ground (YL/GN)
3–10 TNC 370 D Mounting and Electrical Installation July 02

3.7.2 Power Supply
X31 NC Power Supply
Terminal
X31
Assignment
PE Protective ground (YL/GN)
U1L1 330 Vac to 450 Vac;
U2L2 50 to 60 Hz
–UZDo not use
+UZDo not use
Danger to internal components!
Do not engage or disengage any connections while the unit is under power.
July 02 Mounting and Electrical Installation TNC 370 D 3–11

X44 PLC Power Supply
Terminal Assignment Fuse
1 + 24 Vdc can be switched off via EMERGENCY STOP F 3,15 A
2 + 24 Vdc cannot be switched off via EMERGENCY STOP F 2 A
3 0 V
HEIDENHAIN recommends that you operate the PLC of the LE (and the PL 410B/PL 405B) with a 24 V
control voltage that is generated as per VDE 0551. The control voltage must be smoothed with approx.
150µF / A (at 15 A, this corresponds to a smoothing capacity of 2250 µF), where a minimum capacity of
1000µF (63V) is to be ensured.
The 0 V line of the PLC power voltage must be connected by a grounding line (Ƴ 6 mm2) with the
central signal ground of the machine.
Supply
voltage
Voltage range,
mean dc voltage
Max. current consumption
(when half of the outputs
are on simultaneously)
Current
consumption
(when half of the
outputs are on
simultaneously)
24 Vdc
EN 61 131-
2: 1994;
VDE 0411 Part
500
Lower limit
19,2 V - - -,
Upper limit
30 V - - -,
LE 370 D: 2 A
LE 370 D: 48 W
Besides the voltage tolerance, a dc component with a peak value of 5% of the rated voltage is
permissible. The absolute limits lie at 30 V/19.2 V.
Danger to internal components!
Use only original replacement fuses.
3–12 TNC 370 D Mounting and Electrical Installation July 02

July 02 Mounting and Electrical Installation TNC 370 D 3–13
3.7.3 Measuring System Inputs
HEIDENHAIN TNC contouring controls are designed for use with incremental linear and angular
encoders as measuring systems.
However, HEIDENHAIN recommends using encoders with distance-coded reference marks because
they significantly reduce the traverse distance required to establish the absolute position.
Maximum current load per encoder input: 200 mA
Use only original HEIDENHAIN encoder cables, connectors and couplings. For maximum cable
lengths see “Cable Overview.”
Encoder for Position with 1 VSS
Maximum input frequency: 350 kHz (via MP 115.1 switchable to 50 kHz)
X1, X2, X3, X4 and X6 (Spindle) Encoder (1 VPP) (via MP 115.0 switchable to 11µA)
Logic unit Encoder cable
D-sub
terminal
(male) 15-pin
Assignment D-sub
connector
(female) 15-pin
1 + 5 V (UP) 1 Brown/Green
2 0 V (UN) 2 White/Green
3 A+ 3 Brown
4 A– 4 Green
5 0 V 5
6 B+ 6 Gray
7 B– 7 Pink
8 0 V 8
9 + 5 V 9 Blue
10 R+ 10 Red
11 0 V 11 White
12 R– 12 Black
13 0 V 13
14 Do not use 14 Violet
15 Do not use 15
Housing External shield Housing External shield
For the spindle position, HEIDENHAIN recommends the ROD 486 with 1024 or 2048 lines.
The 1 VPP signals are interpolated by a factor of 1024.

3–14 TNC 370 D Mounting and Electrical Installation July 02
3.7.4 Reference Signal for the Spindle
Usually, the reference mark of the spindle encoder is evaluated as a reference signal for the spindle.
In special cases, a 24 V signal on terminal X30 can be evaluated as a reference signal for the spindle
or as a reference signal release (see chapter “Spindle”). For reliable evaluation, the signal must last
for at least 3 milliseconds.
X30 Spindle Reference Signal
Terminal Assignment
1 +24 V input
2 0 V
3.7.5 Supply voltage for Control-is-Ready Signal
The power supply for the control-is-ready signal is taken from the 24 V power supply of the PLC.
X34 power supply for control-is-ready signal
Connecting terminal Assignment
1 +24 V PLC
2 0 V

July 02 Mounting and Electrical Installation TNC 370 D 3–15
3.7.6 Analog Nominal Value Output
Maximum loading of the analog outputs: 2 mA
Maximum capacitance: 2 nF
X8 Nominal Value Output
Logic unit Connecting Cable
D-sub terminal
(female) 15-pin
Assignment D-sub
connector
(male) 15-pin
Color
1 Nominal value output 1 1 BN
2 Analog input 2 BN/GN
3 Nominal value output 2 3 YL
4 Do not use 4 RD/BL
5 Nominal value output 3 5 PK
6 Do not use 6 GY/PK
7 Nominal value output 4 7 RD
8 Nominal value output 5 8 VI
9 0V Nominal value output 1 9 WH
10 0V Analog input 10 WH/GY
11 0V Nominal value output 2 11 GN
12 Do not use 12
13 0V Nominal value output 3 13 GY
14 0V Nominal value output 4 14 BL
15 0V Nominal value output 5 15 BK
Housing External shield Housing External shield
· The connecting cables to the nominal value outputs must not have more than one intermediate
terminal.
· If it is necessary to branch to physically separate servo inputs, the connection must be
made in a grounded terminal box. Suitable terminal boxes are available from HEIDENHAIN
(Id. Nr. 251 249 01).
· The chassis of the terminal box must be electrically connected with frame of the machine.
· The 0 V connection of the nominal-value-difference inputs must be connected with signal
ground. Required cross section ³Ø 6 mm².
· Use only original HEIDENHAIN connecting cables and connecting elements.

The following wiring plan is suggested for shielding in the terminal box :
Insulated against housing
Leads are provided
with en sleeves.
Cable screens are led onto 0.14 mm2
insulated strands via crimp eyelets.
SERVO
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
LE
•
•
XYZS
IV
Insulated against housing
Leads are provided with end sleeves
Cable shields are led onto 0.14 mm² insulated
wires via crimp eyelets.
Connection
terminal
Assignment
1 Nominal value output X axis
2 Nominal value output 0 V X axis
3 Nominal value output Y axis
4 Nominal value output 0 V Y axis
5 Nominal value output Z axis
6 Nominal value output 0 V Z axis
7 Nominal value output IV axis
8 Nominal value output 0 V IV axis
9 Not used
10 Not used
11 Nominal value output S axis
12 Nominal value output 0 V S axis
13 Shield connection
14 Shield connection
15 Shield connection
16 Shield connection
3–16 TNC 370 D Mounting and Electrical Installation July 02

July 02 Mounting and Electrical Installation TNC 370 D 3–17
3.7.7 Switching Inputs 24 Vdc for the PLC
Voltage ranges: Logic unit PL 410 B/PL 405 B
“1” signal: Ui13 V to 30.2 V
“0” signal: Ui–20 V to 3.2 V
Current ranges:
“1” signal: Ii3.8 mA to 8.9 mA 2.5 mA to 6 mA
“0” signal: Ii when Ui= 3.2 V 1.0 mA 0.65 mA
Address No. of inputs Device
I0 to I31 31 + control-is-ready signal Logic unit X42 (PLC input)
I128 to I152 25 Logic unit X46 (machine operating panel)
I64 to I127 64 First PLC input/output board PL 410 B
I92 to I255 64 Second PLC input/output board PL 410 B
I64 to I95 32 PL 405 B