I/O component - IB ST 24 DO16R/S 2721112

INTERBUS-ST digital output module, 16 relay N/O contact outputs, 3-conductor connection technology, IP20 degree of protection, consisting of: terminal part with screw connection and module electronics

Product Details

INTERBUS ST digital output modules for AC voltages
The digital INTERBUS output modules are designed for the connection of digital actuators, such as electromechanical valves, contactors or lamps.
In addition to the standard IB ST 24 BDO modules, the range is rounded off by modules with extended functionality.
The scope of functions provided by the standard models covers the majority of applications. On top of this, several modules provide additional electronic functions, such as:
- Output channels in up to four electrically isolated groups
- Separate electronic short-circuit protection for each output channel
- Higher output current
which are needed in individual applications.
All the typical advantages of INTERBUS-ST handling, such as multi-wire connection methods and plug-in electronics are provided by both product lines.

No. of channels 16
Supply: Module electronics
Supply voltage 24 V DC
Current consumption 100 mA
Supply voltage range 20 V DC ... 30 V DC (including ripple)
Ripple 3.6 Vpp within the allowable voltage range

Dimensional drawing
Height 117 mm
Width 118 mm
Depth 116 mm

Nominal load, ohmic 750 W
Maximum output current per channel 3 A
Nominal output voltage 230 V AC
Output name Relay output
Nominal load, inductive 200 VA
Connection technology 3-conductor
Nominal load, lamp 75 W
Number of outputs 16
Protective circuit Short-circuit protection; electronic
Connection method Screw connection

Mounting position Horizontal DIN rail
Mounting type DIN rail

ST local bus
Connection method ST local bus connector
Transmission speed 500 kbps

Air pressure (operation) 86 kPa ... 108 kPa (1500 m above sea level)
Ambient temperature (operation) 0 °C ... 55 °C
Ambient temperature (storage/transport) -40 °C ... 80 °C
Degree of protection IP20
Air pressure (storage/transport) 86 kPa ... 108 kPa (1500 m above sea level)
Permissible humidity (storage/transport) 95 % (non-condensing)
Permissible humidity (operation) 75 % (non-condensing)

Termination block
Conductor cross section AWG 24 ... 12
Stripping length 8 mm
Conductor cross section, flexible 0.2 mm2 ... 2.5 mm2
Connection method Screw connection
Conductor cross section, rigid 0.2 mm2 ... 2.5 mm2
Connection technology
Connection name Termination block
Conductor connection
Conductor cross section AWG 24 ... 12
Conductor cross section solid 0.2 mm2 ... 2.5 mm2
Stripping length 8 mm
Connection method Screw connection
Conductor cross section flexible 0.2 mm2 ... 2.5 mm2

Utilization restriction
EMC note EMC: class A product, see manufacturer's declaration in the download area

Protection class III (IEC 61140, EN 61140, VDE 0140-1)

Type modular
INTERBUS Smart Terminal
No. of channels 16
Mounting position Horizontal DIN rail

Order Key 2721112
Packing unit 1 pc
Minimum order quantity 1 pc
Sales Key 114
Catalog Page Page 165 (C-6-2019)
GTIN 4017918132323
Weight per Piece (including packing) 685,0 GRM
Weight per Piece (excluding packing) 685,0 GRM
Customs tariff number 85389091
Country of origin DE

UL Recognized

cUL Recognized


cULus Recognized

REACh SVHC Lead 7439-92-1

Your advantages

16 relay outputs
Connection of actuators in 3-conductor technology
Floating relay contacts
Diagnostic and status indicators