HEIDENHAIN iTNC 530 HSCI - Page 42

February 2012 4 – 43
External
EMERGENCY
STOP 26599
 The "control-is-ready" PLC input is not active.
 The emergency stop circuit was interrupted
manually or by the control.
 Enable the emergency stop button, switch on
the control voltage, and acknowledge the error
message.
 Check the emergency-stop circuit.
(EMERGENCY STOP button, axis limit
switches, wiring, etc.)
 EMERGENCY STOP key pressed on machine
operating panel or handwheel
 Axis is on hardware limit switch
 Wiring interrupted
 Relays, safety contactor combinations
defective
 “Control is ready“ output is not powered
with 24 V.
 "Control is ready" output of UEC or PLB
defective
 Retract the axis.
 Check the EMERGENCY STOP chain.
(See ”"Control is ready" output and input
(EMERGENCY STOP chain)” on page 17 – 228.)
 If "Control is ready“ output is defective -->
replace UEC or PLB.
(See ”Exchange of HEIDENHAIN components”
on page 29 – 515.)
 See ”Checking the enables on the iTNC 530
HSCI” on page 17 – 225.
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 19 – 300.
Error in HSCI
communication
21112
 An error occurred during communication with a
unit on the HSCI bus.
 Check all devices and connections.
 See ”Bus diagnosis” on page 12 – 147.
Error: Profibus
configuration
 Evaluation of the Profibus configuration
resulted in an error.
 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 MP7640
 The transmission line is defective or incorrect.
 Co
nne
ct the handwheel via cable adapter.
 Check machine parameter MP7640.
 Inspect the data transfer line for damage.
 See ”Handwheel” on page 25 – 401.
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