Termination resistor - PSI-TERMINATOR-PB-TBUS

Active termination resistor for PROFIBUS and RS-485 bus systems, redundant power supply, routing of the supply voltage via DIN rail connector, electrical isolation, switchable termination, integrated programming interface

Product Details

PROFIBUS or other RS-485 networks can be actively terminated at the bus end using the PSI-TERMINATOR-PB-TBUS. This ensures safe communication even if the bus device is connected/disconnected during operation. In addition, the connectable termination enables the device to be operated as a service interface at any point in the bus system. For the operation of active programming devices, the required power supply is provided at the alternative D-SUB connection. When several devices are installed in combination, the supply voltage can be conveniently routed through the DIN rail connector.

Utilization restriction
EMC note EMC: class A product, see manufacturer's declaration in the download area
Utilization restriction
CCCex note Use in potentially explosive areas is not permitted in China.

Product type Terminal resistor
MTTF 3305 Years (SN 29500 standard, temperature 25°C, operating cycle 21%)
1923 Years (SN 29500 standard, temperature 40°C, operating cycle 34.25%)
911 Years (SN 29500 standard, temperature 40°C, operating cycle 100%)
Insulation characteristics
Overvoltage category II
Pollution degree 2

Electrical isolation RS-485 // VCC
Maximum power dissipation for nominal condition 0.24 W
Test voltage data interface/power supply 1.5 kV AC (50 Hz, 1 min.)
Supply voltage range 18 V DC ... 30 V DC (via pluggable COMBICON screw terminal block)
Nominal supply voltage 24 V DC (via pluggable COMBICON screw terminal block)
Typical current consumption 10 mA (24 V DC, no load on D-SUB)
60 mA (24 V DC, current drain at D-SUB of 150 mA)
Max. current consumption 12 mA (18 V DC, no load on D-SUB)
77 mA (18 V DC, current drain at D-SUB of 150 mA)
Status and diagnostic indicators LEDs: US (power supply), ACT (data activity)

Conductor cross section, flexible 0.20 mm² ... 2.50 mm²
Conductor cross section, rigid 0.20 mm² ... 2.50 mm²
Conductor cross section, flexible [AWG] 24 ... 12
Torque 0.6 Nm ... 0.8 Nm

Signal Modbus
Data: PROFIBUS acc. to IEC 61158, RS-485 2-conductor
Serial transmission speed ≤ 12 Mbps
Connection method D-SUB 9, COMBICON
Transmission length ≤ 1200 m (Depends on transmission speed and cable type)
Termination resistor 390 Ω
220 Ω
390 Ω (Can be connected)
Conductor cross section flexible max. 1.5 mm²
Conductor cross section flexible min. 0.2 mm²
Conductor cross section solid max. 1.5 mm²
Conductor cross section solid min. 0.2 mm²
Conductor cross section AWG max. 16
Conductor cross section AWG min. 24
Output nominal voltage 5 V DC

Dimensional drawing
Width 22.5 mm
Height 92 mm
Depth 73 mm

Color green
Material PA 6.6-FR (Housing)

Ambient conditions
Degree of protection IP20
Ambient temperature (operation) -40 °C ... 70 °C
Ambient temperature (storage/transport) -40 °C ... 85 °C
Altitude ≤ 5000 m (For restrictions, see the manufacturer's declaration for altitude operation)
≤ 2000 m (Restrictions for ATEX applications)
Permissible humidity (operation) 10 % ... 95 % (non-condensing)
Air pressure (operation) ≤ 80 kPa (When used in EX zone 2)

Designation CE
Certificate CE-compliant
Designation ATEX
Identification  II 3 G Ex nA IIC T4 Gc X
Note Please follow the special installation instructions in the documentation!
Designation UL, USA / Canada
Identification 508 Listed
Designation Corrosive gas test
Identification ISA-S71.04-1985 G3 Harsh Group A

Electromagnetic compatibility Conformance with EMC Directive 2014/30/EU
Electrostatic discharge
Standards/regulations EN 61000-4-2
Electrostatic discharge
Contact discharge ± 6 kV (Test Level 3)
Discharge in air ± 8 kV (Test Level 3)
Indirect discharge ± 6 kV
Comments Criterion B
Electromagnetic HF field
Standards/regulations EN 61000-4-3
Electromagnetic HF field
Frequency range 80 MHz ... 3 GHz (Test Level 3)
Field intensity 10 V/m
Comments Criterion A
Fast transients (burst)
Standards/regulations EN 61000-4-4
Fast transients (burst)
Input ± 2.2 kV (Test Level 3)
Signal ± 2.2 kV (Test Level 3)
Comments Criterion B
Surge current load (surge)
Standards/regulations EN 61000-4-5
Surge current load (surge)
Input ± 0.5 kV (sym. / asym.)
Signal ± 1 kV (Data line, asymmetrical)
Comments Criterion B
Conducted interference
Standards/regulations EN 61000-4-6
Conducted interference
Frequency range 0.15 MHz ... 80 MHz
Comments Criterion A
Voltage 10 V
Emitted interference
Standards/regulations EN 55011
Comments Class A, industrial applications
Criterion A Normal operating behavior within the specified limits.
Criterion B Temporary impairment to operational behavior that is corrected by the device itself.

Free from substances that could impair the application of coating according to P-VW 3.10.7 57 65 0 VW-AUDI-Seat central standard

Mounting type DIN rail mounting

Item number 2702636
Packing unit 1 pc
Minimum order quantity 1 pc
Sales Key *****
Product Key DNC141
Catalog Page Page 424 (C-6-2019)
GTIN 4055626251530
Weight per Piece (including packing) 140.7 g
Weight per Piece (excluding packing) 137.1 g
Customs tariff number 85389091
Country of origin DE


ECLASS-9.0 19070403
ECLASS-10.0.1 19070403
ECLASS-11.0 19070403


ETIM 8.0 EC000448


UNSPSC 21.0 32121600

UL Listed

Approval ID: FILE E 238705

cUL Listed

Approval ID: FILE E 238705


Approval ID: PxCIF16ATEX2702636X

cULus Listed

REACh SVHC Lead 7439-92-1
China RoHS Environmentally Friendly Use Period = 50 years
For information on hazardous substances, refer to the manufacturer’s declaration available under “Downloads”

Your advantages

Diagnostic LEDs for voltage and data activity
Interference-free bus communication thanks to active termination
Compact housing design
Fixed programming interface in the network
Termination can be connected externally
Installation as single device or in combination with other devices
Extended temperature range of -40 °C … +70 °C
Electrical isolation of power supply and data interface
Redundant power supply
Supply voltage routed through a DIN rail connector for use in combination with other devices