Assignment; Address Configuration; Operation; Status Led - oventrop Aktor M ST L Modbus Operating Instructions Manual

Operation

Illust. 5: DIP switch panel
5.3.1

Assignment

Function
OFF
BIT 0
BIT 1
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6 The baud rate is reset to 38.400,8,N,2 by
switching back and forth
BIT 7 Terminal Inactive
resistance
5.3.2

Address configuration

Address BIT BIT
5 4
[32] [16]
1 0 0
2 0 0
3 0 0
4 0 0
. . .
. . .
. . .
63 1 1
f Set the addresses of your actuators as desired.
(Modbus topology see section 10.1 on page 15).
Each address must only be used once in a
Modbus network.
Z The actuator will automatically perform an initialisa-
tion run after setting of the Modbus addresses.
Z After completion of the initialisation run and com-
missioning of the Modbus interface, the actuator will
follow the control signals.
12
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Switch position
ON
0 1
0 1
0 1
0 1
0 1
0 1
Active
BIT BIT BIT
3 2 1
[8] [4] [2]
0 0 0
0 0 1
0 0 1
0 1 0
. . .
. . .
. . .
1 1 1
6. Operation
6.1

Status LED

The status LED is located under the casing cover
above the terminal on the right hand side and dis-
plays the operating status of the actuator.
The status LED is visible even when the cover is
closed.
Status LED Meaning
Lit green
Flashing
green quick-
ly
Flashing
green
Flickering
green
Flashing
yellow
Lit red
Off
6.2 Parametrization of the bus failure
detection via Modbus
Register Name
address
133 Bus failure
BIT
function
0
[1]
1
0
134 Emergency
1
position
0
.
.
If the value 3 has been configured in the register
.
address 133, the valve emergency position (0-
1
100 %) configured in the register address 134
will be approached in case of a bus failure (no
query by the Modbus Master for 120s).
Once the bus communication has been re-
stored, the valve will again be controlled auto-
matically according to the set operating mode.
„Aktor M ST L Modbus"
Normal operation
Mounting position switch position 0
(switches 1 to 6 set to OFF)
Initialisation run
Modbus communication
Manual setting (stem fully extended)
Valve adaptation error (initialisation run
without valve)
Operating voltage interrupted
Bus com-
munication
Configura-
tion
Configura-
tion
101274584-V01.11.2019
Values
See register
address 133
in section
10.2 on
page 15.
0..100%