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Operation and indication | Button operation and indication functions
Valve drive
Deenergised opened
–
LED flashes slowly: output in manual operation mode
–
LED flashes quickly: output disabled via permanent manual operation mode
In the case of valve outputs working with an 8-bit command value (PWM), the
LEDs dynamically display the switch-on and switch-off phases of the pulse
width modulation.
If no valve voltage is connected or switched on at the terminals 8L and 8N (1),
then all status LEDs are also always switched off, even if bus voltage is avail-
able, as the valve outputs cannot be energised.
On the LED status display, the valve direction of action configured for each
output in the ETS is not taken into account. As a result, the LEDs do not im-
mediately display the valve state (opened / closed). Inversion of the status dis-
play according to the valve direction of action thus does not take place.
The manual operation of the actuator distinguishes between the following operating
modes:
–
Bus operation: Operation via room temperature controllers, push-button
sensors, or other bus devices,
–
Temporary manual operation mode: manual operation locally with keypad,
automatic return to bus control,
–
Permanent manual operation mode: exclusively manual operation on the
device (e.g. construction site mode, commissioning phase).
When manual operation mode is active, the outputs cannot be controlled via
the bus.
In case of bus voltage failure, manual operation mode is not possible.
In manual operation mode, bus operation can be disabled via a telegram.
Manual operation mode is terminated on activation of the disabling function.
No manual operation of the device is possible if the actuator is programmed by
the ETS with an incorrect application program or if the application program
was unloaded. In the as-delivered state of the actuator, manual operation can
be used even before commissioning via the ETS (construction site mode).
Further details concerning manual operation, especially with respect to the
possible parameter settings and the interaction with other functions of the ac-
tuator can be found in the chapter "Valve outputs" of the present documenta-
tion.
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
LED ON
Output energised
Valve closed / Closing
phase
LED OFF
Output not energised
Valve opened / Opening
phase
Active heating or cooling
Page 23 of 257
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