Open OAS-SBS-IOMR-1026 User manual

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OAS-SBS-IOMR-1026
Digital outputs 16A: 4 digital outputs 16A: 4 DO relay outputs each with LED and push button
operation
The digital output module OAS-SBS-IOMR-1026
is a Local Override/Indication Device (LO/ID)
which is used to control four lighting circuits, or
other digital actuators. By means of the integrated
push buttons, it provides the ability of manual
override of the DOs which are usually controlled
via MODBus commands.
The relay outputs provide the normally open
contact of each relay and will be contacted via
terminals. They are implemented using bistable
relays.
For each DO there are two LEDs present for
indicating the status. The left LED signalizes
whether the output is controlled via Modbus commands or whether it is manually overridden by the push
button, whereas the right LED indicates the output's state (ON or OFF).
The possibility of manually overriding the digital outputs by means of the push buttons can be disabled
by using the settings in a register ('Setting the mask for manual override of the Dos’). This can be defined
for each DO separately. Changing between the modes ‘Automatic’ and ‘Manual’ is done by holding down
the push button. The time required for this can be set together for all four channels. If a button is pressed
for a too short time, the left LED ('Automatic') flashes orange for one single time shortly after releasing
the button. If, however, the channel is blocked for manual override due to the settings in the mask, this
LED flashes permanently during the button is pressed.
There is a register available that shows whether and which push button has been pressed since the last
time this register has been read. When reading this register, all bits will be reset to zero. The current
state of the push buttons and the outputs as well can also be read out via registers.
Furthermore, via a register there can be configured whether the outputs shall start in automatic mode
or manually overridden (OFF). In addition, a delay time can be defined, which must elapse between the
switching of two outputs at least. Thus, the system perturbations resulting from the switching operations
can be reduced.
All digital outputs can be configured so that they will assume a defined state (‘safe state’) if the module
has not received valid bus telegrams via the MODBus for a certain time. These predefined states are
set separately for each output, whereas the time until activating the safe state is common for all outputs
of a module.

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Note: The time for triggering the 'safe state' should not be too short in order to avoid
malfunctions as they can occur, e.g., when another device which is connected to the bus fails
and will so cause time-outs
Regarding the system configuration (addressing, maximum number of modules connected to a MODBus
Master interface, installation, connection to the bus etc.), please follow the instructions in the chapter
Configuration.
Overview terminal assignment
OAS-SBS-
IOMR-1026
GND
24V AC/DC
not used
not used
Output voltages of DOs are potential-free
DO No. 1-4
DO1 DO2 DO3 DO4
Terminal:
10
11
12
13
14
15
16
17
Power supply
Terminal:
1
2
Bus connection
Terminal No.
I-GND 3
Net A (–) aka /D 4
Net B (+) aka D 5

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Important technical data
Power supply:
24 V AC or DC, connection via terminals
Specifications digital outputs:
Relay outputs (NO contact), max. 250 VAC)
Characteristics (Resistive Load):
Initial contact resistance
100mΩ(at 1A / 6 VDC)
Minimum switching current
100mA (at min. 5 VDC)
Rated load
16 A at 250 VAC
Max. switching voltage
277 VAC
Max. switching capacity
4432 VA (AC)
Endurance
2.5x104ops (Rated Load)
Inductive loads
should be avoided as far as possible, or be suppressed at
the source, respectively.
Current consumption
typically, 14 mA (DC), 40 mA (AC)
Power dissipation
max. 0.4 W (DC), 1.0 W (AC)
Counting pulse (only digital inputs)
Max. counter value (digital inputs)
duration min. 10ms, only for DC signals
65.535 (= 216-1)
Bus interface
RS485
Supported baud rates
(Autobauding)
9.600 Baud, 19.200 Baud,
38.400 Baud, 57.600 Baud
Bus cycle time
individually depending on the baud rate and the number of
data points that will be addressed
Memory
µPC internally
Max. number of write cycles
Configuration settings such as setting the LED colors,
inverting the inputs, or upshift and downshift times are
stored in the internal EEPROM and can be overwritten up
to 100,000 times.
Protocol
Serial port parameter setting
MODBus rtu (RS485)
8-N-1

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Inputs and outputs
see corresponding documentation of the respective
modules
Environmental conditions:
Operating temperature
0...50°C
Transport and storage temperature
0...70°C
Relative humidity
10...90%, non-condensing
Protection class
IP 20
Dimensions
(for exact dimensions see chapter Dimensions and
weights)

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Dimensions and weights
The dimensions of the modules can be seen from the following figures and the table below:
All dimensions in mm, weight in grams
Type
H
W
D
Weight
SBS-IOMR-1026
92
72
70
171
H
W
D

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Wiring diagrams