27444614 - PSM-ME-RS232/RS232-P - Interface converter for the electrical isolation of RS-232 interfaces ( 4 channels ).
by PERLE

For the electrical isolation of RS-232 (V.24) interfaces, the PSM-ME-RS232/RS232-P is the ideal solution.

3-way EMI, RFI and Transient Surge Immunity

The RS-232 interface is an asymmetric voltage interface with common signal ground for all signals. In addition to its very low signal power, a characteristic feature of the interface is that the signal ground is connected to the grounded chassis housing. This results in very little immunity to interference and a maximum range of 15 meters. Using the PSM-ME-RS232/RS232-P Serial Isolator, considerably higher immunity to interference in industrial applications can be achieved.

By isolating the TX/RX data channels and the RTS/CTS control lines the PSM-ME-RS232 Serial Isolator effectively protects your RS232 devices from transient surges, lightning strikes, ground loops and noise issues.

With their high-grade 3-way isolation between both interface sides the PSM-ME-RS232 provides a floating and interference resistant RS-232 interface for the supply and ground potential. Expensive termination devices are also protected against damage by this decoupling.

Any additional potential EMI can be removed from the transmission path by using additional PSM-ME-RS232 Serial Isolators on both device interfaces.

The PSM-ME-RS232 Serial Isolators can be wall mount AC powered or snapped onto standard DIN rails supplied with 24V DC or AC. In the case of variable cable lengths, the RS-232 connection on the field side can be established conveniently using plug-in screw terminal blocks

Serial Isolator Features

• Maximum transmission speed of 115.2 kbps
• High-quality 3-way isolation up to 2 kV (VCC, V.24 (RS-232), TTY)
• Integrated surge protection with transient discharge to the DIN rail
• Transmission speed up to 115.2 kbps
• Transmission of TxD/RxD data channels and RTS/CTS control lines
• Active data transmission indicated by separate data indicators for the transmit and receive channels
• 24 V DC or AC power supply suitable for the control cabinet

PSM-ME-RS232/RS232-P Technical Specifications

Serial interface
Interface 1	V.24 (RS-232) interface in acc. with ITU-T V.28, EIA/TIA-232, DIN 66259-1
Connection method	D-SUB 9 plug
Transmission length	15 m (shielded twisted pair)
Conductor cross section flexible min.	0.2 mm²
Conductor cross section flexible max.	2.5 mm²
Conductor cross section AWG min.	24
Conductor cross section AWG max.	13
Pin assignment	DTE/DCE switchover via switch
Protocols supported	transparent protocol
Serial transmission speed	115.2 kbps
Interface 2	V.24 (RS-232) interface in acc. with ITU-T V.28, EIA/TIA-232, DIN 66259-1
Connection method	Pluggable screw connection
Transmission length	15 m (shielded twisted pair)
Conductor cross section flexible min.	0.2 mm²
Conductor cross section AWG min.	24
Conductor cross section AWG max.	13
Ambient Conditions
Ambient temperature (operation)	0 °C ... 55 °C
Ambient temperature (storage/transport)	-40 °C ... 85 °C
Permissible humidity (operation)	10 % ... 95 % (non-condensing)
Altitude	5000 m (For restrictions see manufacturer's declaration)
Degree of protection	IP20
Noise immunity	EN 61000-6-2:2005
General
Electrical isolation	VCC // V.24 (RS-232) (A) // V.24 (RS-232) (B)
Test voltage data interface/power supply	2 kVrms (50 Hz, 1 min.)
Standards/regulations
Electromagnetic compatibility	Conformance with EMC Directive 2014/30/EU
Net weight	123.18 g
Housing material	PA
Color	green
Conformance	CE-compliant
UL, USA/Canada	508 recognized
Noise emission	EN 61000-6-3
MTBF	2263 Years (Telcordia standard, 25°C temperature, 21% operating cycle (5 days a week, 8 hours a day))
	438 Years (Telcordia standard, 40°C temperature, 34.25% operating cycle (5 days a week, 12 hours a day))
Transmission channels	4 (2/2), RxD, TxD, RTS, CTS; full duplex
Bit delay	< 3 µs
Bit distortion	< 5 %
Test voltage data interfaces	2 kV AC
Test voltage data interface/power supply	2 kV AC
Power supply
Nominal supply voltage	24 V AC/DC ±20 %
Supply voltage range	19.2 V AC/DC ... 28.8 V AC/DC
Typical current consumption	40 mA (24 V DC)
Protective circuit	Surge protection Suppressor diode
Dimensions
Width	22.5 mm
Height	99 mm
Depth	118.6 mm
Environmental Product Compliance
China RoHS	Environmentally Friendly Use Period = 50
Reach and RoHS Compliant	Reach and RoHS Compliant
Standards and Regulations
Electromagnetic compatibility	Conformance with EMC Directive 2014/30/EU
EMC Immunity	EN 61000-4-2: Contact discharge ± 6 kV (Test Level 3) EN 61000-4-3: Frequency range Test Level 3 EN 61000-4-4: Criterion B EN 61000-4-5: Signal ± 2 kV (12 Ω) EN 55011 EN 61000-4-6
Conformance	CE-compliant
UL, USA/Canada	508 recognized
Noise emission	EN 61000-6-3
Noise immunity	EN 61000-6-2:2005
Connection in acc. with standard	CUL
UL, USA/Canada	Class I, Div. 2, Groups A, B, C, D
	Class I, Zone 2, AEx nA IIC T4
	Class I, Zone 2, Ex nA IIC T4 Gc X
Approvals
	UL Recognized cUL Recognized DNV EAC cULus Recognized  UL Listed cUL Listed cULus Listed
Commercial data
Packing unit	1
Weight per piece	181.2 g
Country of origin	Germany