
Basic documentation
5 TXV 172 52
1. DESCRIPTION AND PARAMETERS
The long-distance transmission module CD-7252 is designated for transmission of
telemechanic data among PLC TECOMAT TC700 using fixed lines (for example long-distance
transmission cable). The module is of a slave type. The interface is optional in a form of sub-
module. There are available RS-232 (MR-0102), RS-485 (MR-0112), RS-422 (MR-0122)
interfaces which can be used for the connection with external modem. Then, the sub-modules
MR-0155 and MR-0156 are containing FSK modem (frequency shift keying) with frequency
modulation in the band of low-frequency signals corresponding to CCITT recommendation.
1.1 BASIC PARAMETERS
Product standard ČSN EN 61131-2
Protection class of electrical object
ČSN 33 0600 III
Connection screwless terminals, max. 1.0 mm
2
conductor per
terminal
Type of equipment built-in
Module input power max. 3 W
Coverage (after installation into rack ) IP20 ČSN EN 60529
Dimensions 137 x 30 x 198 mm
1.2 OPERATIONAL CONDITIONS
Class of ambient influence - ČSN 33 2000-3 normal
Operating temperatures range 0 °C to + 55 °C
Permissible temperatures during transport -25 °C to +70 °C
Relative humidity 10 % to 95 % without condensation
Atmospheric pressure min. 70 kPa (< 3000 m over the sea level)
Degree of pollution - ČSN EN 61131-2 2
Overvoltage category of installation -
ČSN 33 0420-1 II
Working position vertical
Type of operation continuous
Electromagnetic compatibility
Emissions - ČSN EN 55022* class A
Immunity table 16, ČSN EN 61131-2
Vibration resistance (sinusoidal vibrations)
Fc according to ČSN EN 60068-2-6 10 Hz to 57 Hz, amplitude 0.075 mm,
57 Hz to 150 Hz, acceleration 1G
* This is a product of class A. In indoor conditions (i.e. such conditions, where using of radio
and TV sets can be supposed in a distance of 10 m from the mentioned equipment), the product
can cause radio disturbances. It might be required in such cases that the user takes necessary
measures to avoid this.
1.3 ELECTRICAL PARAMETERS
The parameters are dependant on installed sub-modules of communication interfaces and are
described in the documentation of the particular sub-modules.