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Data sheet
SECURITON AG Alpenstrasse 20 CH - 3052 Zollikofen Switzerland T
800454 1 / 4
MHD 535 Cable Terminator Module CTM 535
TheCable Terminator ModuleCTM 535 is the terminator module for
the temperature sensor cable MHD 535. An MHD 535 system is
notoperational without the Cable Terminator ModuleCTM 535.
The Cable Terminator ModuleCTM 535 contains the
temperature-compensated reference current source which is required
for the formation of the
differential current signals used to transmit the sensor values
to the Processor UnitPU.
Construction of the Cable Terminator Module CTM 535
The Cable Terminator ModuleCTM 535 comprises a plastic enclosure
made of glass fiber reinforced polyester containing the
electroniccomponents for termination of the sensor bus system. The
printed circuit board features a flat-ribbon connector for the
direct connection of thesensor cable, and in addition a seven-pole
plug-in terminal for connecting the sensor cable via a connecting
cable.
Figure 1: Construction of the Cable Terminator Module CTM
535
Terminal block for connecting cableCCA 535
Banana connector
Flat-ribbon connector Cable entry
Mounting the Cable Terminator Module CTM 535
Mounting position of the Cable Terminator ModuleCTM 535
The Cable Terminator ModuleCTM 535 can be mounted on the X, Y or
Z axis.
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2 / 4 T 800454 MHD535
Figure 2: Drilling plan of the Cable Terminator Module CTM
535
Selecting the location for the Cable Terminator ModuleCTM
535
The location should be a site which is not rendered inaccessible
by equipment on site (cable ducts, runs etc.) The mounting location
is usuallypredetermined by the application in question (application
and mounting type of the sensor cable). A minimum distance of 15 cm
from parts onsite (control cabinets, alcoves etc.) should be kept
on the entry side of the sensor cable.
Notice
A minimum distance of half a sensor distance or 10 m connecting
cable CCA 535 should be maintained
between the last sensor and the Cable Terminator ModuleCTM
535.
Mounting should be carried out, whenever possible, immediately
after the last sensor (i.e. without a connecting cable) (grounding
concept,inductive coupling). After consultation with the
manufacturer and after an accurate design check, remote mounting is
also possible.
Fastening the Cable Terminator ModuleCTM 535
The Cable Terminator ModuleCTM 535 is fastened using 4 screws.
When mounting on cement or masonry in tunnel applications, special
nailanchors CMS 511 with stainless steel V4A screws (5/15x35)
should be used. A minimum distance of 15 cm from parts on site
(controlcabinets, alcoves etc.) should be kept on the entry side of
the sensor cable.
Safety Notice
For protection against humidity, the enclosed desiccant bag
should be left inside the Cable Terminator ModuleCTM
535.
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Technical specifications of the Cable Terminator Module CTM
535
Figure 3: Dimensioned drawing of the Cable Terminator Module CTM
535
Module Type Parameter Values Remark
CTM 535 Operating voltage +10 ... +20 VDC Via sensor/connecting
cable of theProcessor UnitPU
Power consumption approx. 8.5 mA
Protection class IP65 in accordance with IEC 529 / EN
60529(1991)
Ambient conditions 3K5 / 3Z1 in accordance with IEC 721-3-3 /
EN
60721-3-3 (1995)
Temperature range -40 ... +85 C
Ambient condition humidity
95 % rel. hum. for a short time without condensation
70 % rel. hum. constant
Connection of connecting cable 2.5 mm2maximum
Connection of sensor cable 8-pole
Cable entry
1 x seal insert MHD 535FX
1 x seal insert MHD 535SD
1 x seal insert MHD 535HD
Sensor cable
1 x seal insert 8 - 5 mm Connecting cable
Material of enclosure glass-fiber reinforced polyester
Approval VdS EN54
Dimensions 75 x 138 x 56 mm incl. cable entries
Weight approx. 380 g
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Data sheet
MHD535 T 800454 4 / 4Revision: 11/05/09 vbThe product
specifications contained in this document are subject to change
without notice. Copyright by Securiton
Danger
Prior to the implementation and commissioning of an
installation, the technical documentation T800469 must be
observed.
Connection overview
An overview of the connection of the various devices can be seen
in the tables below.
Conductor Processor UnitPU Earth Connecting BoxECB 535 Sensor
cable module
Shield Tm 0 Tm 0
pink Tm 1 Tm 1 Tm 0
blue Tm 2 Tm 2 Tm 1
white Tm 3 Tm 3 Tm 2
gray Tm 4 Tm 4 Tm 3
green Tm 5 Tm 5 Tm 4
yellow Tm 6 Tm 6 Tm 5
brown Tm 7 Tm 7 Tm 6
Table 1: Overview of connection of connecting cable
Conductor Processor UnitPU Earth Connecting BoxECB 535 Sensor
cable module
Shield Tm 0/1 Banana connector Banana connector
Flat-ribbon cable Flat-ribbon connector Flat-ribbon connector
Flat-ribbon connector
Table 2: Overview of connection of sensor cable
Item numbers of cable module
Brief description Type Item number
Earth Connecting BoxECB 535 MECB0000PEFGRST2
Cable Terminator ModuleCTM 535 Rev G. MCTM00R0PEFGRST2
Connection and Filter ModuleCFM 535 Rev G. MCFM00R0PEFGRST2
Protection and Filter ModulePFM 535 Rev G. MPFM00R0PEFGRST2
Sensor Separator ModuleSSM 535 Rev G. MSSM00R0PEFGRST2
