IDEC HR6S Series Original Instructions Manual page 36

Engineering
State Transitions
State transition
T1
T2
T3
T4
T5
T6
NOTE: Refer to the Activation and Deactivation
"activated" and "deactivated" in the present document.
Example with Emergency Stop
The following example uses a machine with an Emergency Stop pushbutton, a start pushbutton for
manual start, and a motor to demonstrate the individual operating states and state transitions. The
selected application function is Monitoring of Emergency Stop Circuits. The selected start function
is Manual Start. The example assumes that the equipment is properly wired and configured.
After the device is powered on, it enters the operating state Initialization (T1).

If the initialization is successful, the device enters the operating state Run: Outputs Deenergized

(T2).
If an error is detected, the device transitions to the operating state Error (T5).
On entering the operating state Run: Outputs Deenergized, the device verifies the state of the

safety-related input and of the start input. The motor is at a standstill.
If the start pushbutton is not pressed, the start input stays deactivated and the device remains

in the operating state Run: Outputs Deenergized. The motor is at a standstill.
Detailed information on the start functions and the timing can be found in the chapter Start
(see page
Functions
If the start pushbutton is pressed, the start input is activated, i.e. the start condition is fulfilled.

The state of the safety-related input determines whether the device transitions to the operating
state Run: Outputs Energized.
36
Condition
Power on

Initialization successful

Switch on delay has passed

Start condition fulfilled (for example, automatic start or manual start with start

button pressed)
Safety-related inputs activated

For application functions with signal interlock monitoring: no signal interlock

condition
For application functions with synchronization: synchronization time

requirements met
Safety-related inputs deactivated (corresponds to triggering of the safety-

related function)
Error detected on

Power off

63) .
(see page 39) for details on the use of the terms
HR9Z-B2190 8/2020