HEIDENHAIN ITNC 530 - Page 47

July 2010 4 – 47
Ext. In-/output not
ready
 The interface is not connected.
 The external device is not switched on or is
not ready.
 The transmission cable is defective or
incorrect.
 Check the data transmission line.
 See “Connection Setup” on page 13 – 172.
External
EMERGENCY
STOP
 The "control-is-ready" PLC input is not active.  Release the EMERGENCY STOP switch
 Retract axis
 Check the EMERGENCY STOP chain (See
“Checking the "Control is ready" output and
input (EMERGENCY STOP chain)” on page
16 – 233).
 If "Control is ready“ output is defective -->
Replace MC 320 (See “Exchange of the MC
422 B, MC 422 C, MC 420” on page 28 –
542).
 EMERGENCY STOP key pressed on
machine operating panel or handwheel
 Axis is on hardware limit switch
 Wiring interrupted
 Relays, safety contactor combinations
defective
 X34 is not powered with 24 V
 "Control is ready" output of MC 320
defective.
 Release the EMERGENCY STOP switch
 Retract axis
 Check the EMERGENCY STOP chain (See
“Checking the "Control is ready" output and
input (EMERGENCY STOP chain)” on page
16 – 233).
 If "Control is ready“ output is defective -->
Replace MC (See “Exchange of
HEIDENHAIN Components” on page 28 –
523).
 See “Checking the Enables on the iTNC
530” on page 16 – 229
Incorrect
reference position
<axis>
 Signal of the reference pulse is disturbed
(ground shield).
 Position determination via Z1-track is
defective.
 Wrong encoder line count.
 Take measures for noise suppression.
 Check the motor table.
 Inform your service agency.
 See “Speed Encoders” on page 18 – 293.
Error: Profibus
configuration
 An error occurred during evaluation of the
Profibus configuration.
 Inform your service agency.
Synchronization
monitoring <axis>
 The positions of two synchronized axes
differ by a value greater than that defined in
machine parameter MP855.
 Reduce the feed rate and increase the
spindle speed.
 Remove potential sources of vibration.
 If this occurs frequently: Inform your service
agency.
Handwheel?  Electronic
handwheel not connected
 Incorrect handwheel selected in machine
parameter MP 7640
 The transmission line is defective or
incorrect.
 Connect the handwheel via cable adapter.
 Check machine parameter MP 7640.
 Inspect the data transfer line for damage.
 See “Handwheel” on page 24 – 399.
Error message Possible cause of error Measures for error diagnosis and/or
corrective action
Additional information and descriptions in
the manual
Additional information and descriptions in
the manual