HEIDENHAIN ITNC 530 - Page 230

16 – 230 HEIDENHAIN Service Manual iTNC 530
A prerequisite is that the machine machine manufacturer has integrated the "Control is ready"
output and input correctly in the EMERGENY-STOP chain. --> See “Annex: Principle of Function
of the iTNC 530 Control” on page 2 – 657.
Acknowledgment
control is ready
I3 must be set.
 PLC input of the control: X42/4
 Designation: Acknowledgment control is ready
 Designation in the circuit diagrams: NE1
Global drive
enabling
I32 must be set.
 PLC input of the control: X42/33
 Designation: Global drive enabling (the function is defined in the MP 2050)
 Designation in the circuit diagrams: NE2
Drive enabling
for axis groups
24 V must be available at the connectors X150 / 151 for the related axis group.
 Connector on the bottom of the CC: X150 and X151
 Designation: Axis-specific drive enabling
 Definition in machine parameter MP 2040.
Drives ready for
operation
The drives must be ready for operation and report this condition.
 On the HEIDENHAIN inverter system the green LEDs READY at the drive modules UM xxx
or at the output stages of a compact inverter must be lit.
 When non-HEIDENHAIN inverter systems are used, the counterpart displays must be lit.
Integration of the control in the EMERGENCY-STOP
chain
MC
Supply of "Control is ready" output X34, pin 1 = 24 V, pin 2 = 0 V
"Control is ready" output X41, pin 34
"Acknowledgement of Control is ready" input X42, pin 4 = PLC input 3
Note
The use of the axis-specific drive enable is optional, i.e. not implemented on all machines.
Note
If a drive is taken in control, the READY signal must be transmitted via the PWM cable to
the control after a defined time. For this purpose the corresponding relays must have
triggered.
The iTNC monitors the time between activation of the control-loop and the READY signal of
the power output stages.
If the READY signal is missing after the waiting time has passed, the error message
8B40 No drive release <axis> appears.
A connection may be interrupted (wiring in the electrical cabinet, PWM cable between CC
and UM), the relays may trigger too slowly or the drive be defective.
The permissible waiting time is entered in MP 2170 .
This error message may not be generated, as the PLC program does not hook up the current
and speed controllers as long as the ready signal of the drives is missing. --> Watch the
green READY LEDs of the drives. --> See “Checking the readiness of the inverter system”
on page 16 – 243.