„Aktor M ST L Modbus“
Technical description
9
101274584-V01.11.2019
3.3 Technical data
Technical data
Operating voltage
24 V AC ±10 %, 50/60 Hz;
4.8 VA; 24 V DC ±10 %; 2.5
W
Power consumption
Dimensioning:
-
9.0 VA (24 V AC)
-
4.7 W (24 V DC)
nominal:
-
4.8 VA (24 V AC)
-
2.5 W (24 V DC)
Start up load
-
24 V DC; 5.0 A; 0.025 A
2
s
-
24 V AC; 7.2 A; 0.052 A
2
s
Interface
RS485 Modbus RTU slave;
max. 1000 m depending
on the baud rate
Drive
Directly via Modbus via au
-
tomation station or gateway
Inputs and outputs
2 universal in- or outputs
(P1, P2) independently para
-
metrizable via Modbus as:
-
binary input, volt free
max. 500 Ohm; 1 mA; 13
V DC
-
analogue input, see table
"sensor types", S.4
- analogue output 0..10 V
DC only P2
Connection
Two pre-assembled cables
1.5 m; 2 x 2 x 0.5 mm
2
shielded
and 1.5 m; 4 x 0.5 mm
2
Display
LED display for operating
voltage and status
Motor deactivation
Drive stem:
extending = load-depend-
ent,
retracting = load-dependent
Travel noise
<31 dB (A)
Piston stroke
max. 14 mm
Floating time
22 s/mm
Operating power
nominal 500 N
Position indicator
Stroke scale
Valve anti-blocking
function
Optional activation
Parametrization via Modbus
Permissible fluid
temperature in the
valve
0 -120 °C
Ambient tempera-
ture
0 - 50 °C
Ambient humidity
In operation: 0 - 85 % r.h.,
not condensing
Out of operation: 0 - 85 r.h.,
not condensing
Overvoltage cate-
gory
Degree of protection
Pollution degree
2
Protection class
IP54
NOTICE
Short circuit due to drip-
ping water
f
Do not feed the cable in
from the top.
Protective system
III according to EN 60730
Installation position
360°
Maintenance
maintenance-free
Weight
396 g
Bus communication
Interface
EIA-485 / RS-485
Type of transmission
Modbus RTU slave
Supported baud
rates
9.600, 19.200, 38.400
(factory setting), 57.600,
115.200 bps
Start/stop bits
8N1, 8N2 (factory setting)
Number of bus par-
ticipants
Up to 32 recommended,
max. 64
Bus load
1/8 unit load
Termination
Switchable in the appliance,
120 Ohm
Bias network
To be set in the master
Recommended line
Twisted pair cable with
shield (characteristic imped-
ance
about 120 Ohm)
Bus topology with
115.200 baud
Recommended max. line
length 500 m
Bus topology with
38.400 / 57.600 baud
Recommended max. line
length 750 m
Bus topology with
9.600/19.200 baud
Recommended max. line
length 1000 m
Stub lines
Max. line length 2 m
Supported Modbus
function codes
Code Function
0x03
Read holding reg-
ister
0x06
Write holding reg-
ister
0x03
Read holding mul-
tiple
0x10
Write holding mul-
tiple
