Ports

Two    asynchronous ports, TX &RX signalsonly. XON/XOFF selectable

Interface    Options

port 1 is    RS232; port 2 is RS422/485

RS-232

Receiver threshold    + 1.5V  typ. Receiver Rin5kΩ typ. TX o/p ±8V typ (3k     load)

RS-422/485

Receiver threshold    200mV typ  (differential).Receiver Rin    12kΩ min. TX    o/p  0 to + 5V(no DC load); + 2 to + 3V    (120Ω  ohm load)

Power supply

+ 7V to + 35V    DC. + 12V DC Input  powerapprox. constant    at 1-2  watts (startup current 300-600mA)    depending on model. Atstartup, the supply voltage  must reach 7V in
<1 sec.

Isolation
Environmenta

64V PK, tested    at >1000V  AC RMS, 1 second.Operatintemperature    0 to +50C.  Storage
temperature-25C    to + 70C. Relative  humid-ity (operating    and storage) 0 to  90%, noncondensing.

Ventilation

Rail-mounted    KD485 must have  a 50mmgap above and    below.

EMC compliance

Emissions    EN50081-2 (94), immunity
EN50082-2 (95)

Dimensions

29mm (W) x    113mm  (H) x 100mm (L) approximately in    rail-mounted position,  including screw    terminals