- 3 -
•
An external power adaptor is required, with input voltage for the
converter ranging from DC +9V to +30V.
•
Operating temperature: 0 to 55°C
•
Dimensions: 90 x 60 x 21 mm
•
Mounting Kit: Plastic Plates and screws for mounting the A52/A53 on
a wall or surface.
•
Power consumption:
A52: 157 mA max. (+9V);
A53: 285 mA max. (+9V)
Applications
•
Multipoint data acquisition
•
Factory automation
•
Remote serial device control
•
Building security automation
•
Critical industrial control
Installation
Switch and jumper settings
To change the operation mode, remove the two screws on the top of the
converter, open the cover, and then use the array of sliding switches to set
the desired mode.
DIP switches are used to select the operation mode (RS-422 or RS-485).
For RS-485 mode, the control mode (By RTS or ADDC) is also set by DIP
switch.
AUTO
485
RTS
422
JP
Internal view of A52/A53 (*default settings)
SW1
SW2
RS-422 mode
Off
By RTS
Off
RS-485 mode
On*
Auto Data Direction Control (ADDC) On*
In RS-422 mode, RxD is automatically set with a 120 ohm terminating
resistor.
In RS-485 mode, the 120 ohm terminating resistor is set by one jumper.
When shorted, the resistor is enabled.
