Amit RRAM-MCT/D20 User manual

rram-mctd20_g_en_100
RRAM-MCT/D20
IP microtelephone unit
for rolling stock
Operation manual
Version 1.00

RRAM-MCT/D20
rram-mctd20_g_en_100 2/22
AMiT, spol. s r.o. does not provide any warranty concerning the contents of this
publication and reserves the right to change the documentation without
obligation to inform any body or authority about it.
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1. The whole text (all pages) must be copied without any changes.
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and any other notices contained in the documentation.
3. This document must not be distributed for purpose making of profit.
The names of products and companies used herein can be trademarks or
registered trademarks of their respective owners.
AMiT is a registered trademark
Copyright (c) 2013, AMiT, spol. s r. o.
Producer: AMiT, spol. s r. o.
Naskové 3/1100, 150 00 Praha
www.amit.cz
Technical support: [email protected]

RRAM-MCT/D20
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Contents History of revisions.........................................................................................4
Related documentation...................................................................................4
1. Introduction..........................................................................................5
2. Technical parameters..........................................................................6
2.1. Dimensions.....................................................................................................8
2.2. Recommended drawing symbol .....................................................................8
3. Conformity assessment ......................................................................9
3.1. Other tests......................................................................................................9
4. Power supply......................................................................................11
5. Digital inputs ......................................................................................12
6. Connecting a microphone.................................................................13
6.1. Wiring of interconnection cable.....................................................................14
7. Output for loudspeaker .....................................................................15
8. Sound input........................................................................................16
9. Ethernet...............................................................................................17
10. Configuration .....................................................................................18
10.1. The RESTORE button..................................................................................18
10.2. Factory setting parameters........................................................................18
11. Mounting.............................................................................................19
11.1. Installation rules............................................................................................19
12. Ordering information and completion .............................................20
13. Maintenance .......................................................................................21
14. Waste disposal...................................................................................22

RRAM-MCT/D20
rram-mctd20_g_en_100 4/22
History of revisions
Document name: rram-mctd20_g_en_100.pdf
Author: Lu
Revision
Date
Changes
100
18. 6. 2013
New document
Related documentation
1. 
file: ap0037_en_xx.pdf

RRAM-MCT/D20
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1. Introduction
RRAM-MCT/D20 is a IP audio signal digitizer, equipped with two audio inputs
an one output for loudspeaker. Microphone RRAS-GNM/A can be connected
stright to this digitizer.
Device is supplied from factory only with loader. Before first use must be loaded
an user application into device.
Input for microtelephone
Input for external sound source
Output for auxiliary loudspeaker ca. 5 W
Ethernet 100 Mbps interface
Mounting on base plate
Basic features

RRAM-MCT/D20
rram-mctd20_g_en_100 6/22
2. Technical parameters
Processor
STM32F207
Internal FLASH memory
512 KB
Internal RAM
128 KB
EEPROM
2 KB
Type
External, RRAS-GNM/A
Microphone powering
Phantom 3.3 V DC, software controlled
Signal amplitude
Max. 1 V pp.
Input impedance
Powering ON: 1.8 

Connection point
Connector D-sub DE-9 plug
Recommended cabling
Shielded cable
Quantity
2
Type
Floating contact
Galvanic separation
No
Connection point
WAGO769-668
Wire cross section
0.08 mm2to 4 mm2
Recommended cabling
Shielded cable
Maximum cable length
3 m
Quantity
1
Microphone powering
Phantom 3.3 V DC, software controlled
Signal amplitude
1 V pp.
Input impedance
>10 
Frequency range
90 Hz to 7 kHz
Connection point
BNC connector
Recommended cabling
Shielded cable
Quantity
1
Impedance

Frequency range
30 Hz to 7 kHz
Nominal output power
Min. 5 W
Recommended loudspeaker imped.
. 10 W
Connection point
WAGO769-668
Wire cross section
0.08 mm2to 4 mm2
Communication rate
100 Mbps
Galvanic separation
Yes
Galvanic separation strength
500 V AC /1 minute *)
Connection point
RJ45 connector, according to IEEE802.3
Recommended cabling
STP CAT5
Maximum segment length
100 m
*) Insulation must not be used for dangerous voltage separation.
Nominal power supply voltage
24 V DC
Power supply voltage range
16.8 V to 33.6 V DC
Power consumption
Max. 200 mA at 24 V DC
CPU
Microphone
Digital inputs
Sound input
Sound output
Ethernet
Note:
Power
supply *)

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Connection point
WAGO769-668
Wire cross section
0.08 mm2to 4 mm2
Power supply
PoE
Power consumption
5 W
PoE standard
according to 802.3af
PoE Class
2
*) Choose one of two possible powering ( 24 V DC or PoE).
Mechanical construction
Sheet metal cover
Color
RAL 9005
Mounting
To the base, M4 screws
Ingress protection rate
IP20
Weight
535 g


Unit overall mass of plastics
76 g
Included mass of flame retardant
plastics
76 g
Device does not contain
PUR, PVC, Asbestos
Device conforms
2011/65/EU (ROHS)
1907/2006EU (REACH)
Operating temperature range
-
Storage temperature range
-
Maximum ambient humidity
< 95 % non-condensing
Expected MTBF
> 150 000 h
Presumptive life expectancy
15 years
Device is supplied with loader, which enables software downloading by application
RRAS Configurator via Ethernet line.
None
Equipment is intended to operate up to 1 400 m above the sea level.
Equipment is designed to meet the Temperature Class TX.
According to EN 61373 standard, the equipment is classified in terms of vibrations
into Category 1, Class B (mounting to vehicle body).
Permissible supplying voltage drop-outs duration: max 10 ms (Class S2 according to
Chapter 3.1.1.2 of EN 50155 ed. 3).
For supply voltage switching are permissible conditions of C1 and C2 Class.
The equipment meets the SWSIL0 classification according to EN 50128 Railway
applications Communications, signalling and processing systems Software for
railway control and protection systems.
The equipment meets the SIL0 classification according to EN 50129 Railway
applications Communication, signalling and processing systems Safety-related
electronic systems for signalling.
PoE
powering *)
Note:
Mechanics
Dangerous
materials
Temperatures
Others
Software
Components
with reduced
lifetime
Claims EN
50155 ed. 3
Safety
classification

RRAM-MCT/D20
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2.1. Dimensions
204,6
101,8
172,3
167,6
45,2
d5,0
186,6
82,0
Fig. 1 - RRAM-MCT/D20 dimensions
2.2. Recommended drawing symbol
Following drawing symbol is recommended for RRAM-MCT/D20 IP
microtelephone. Only part of it will be visible in following examples.
RRAM-MCT/D20
PWR
X2
SP+
SP-
+U
-U
CHS
3
4
5
1
2
7
8
6
AD2
AD1
COM
X1
ETH
M12
X3
GNM
D-Sub DE-9
X4
AUX IN
BNC
Fig. 2 - Recommended drawing symbol for RRAM-MCT/D20

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3. Conformity assessment
The equipment meets the claims of Czech government decree NV616/2006; the
conformity assessment has been performed in accordance with harmonized
standard EN 50121-3-2 ed. 2.
Tested in accordance
with standard
Type of test
Classification
EN 55011 ed. 3
Radio disturbance

EN 61000-3-3 ed. 2
Electromagnetic compatibility
(EMC) Limitations of voltage
changes, voltage fluctuations and
flicker in public low-voltage supply
systems
Complies
EN 61000-4-3 ed. 3
EMC Part 4-3: Radiated, radio-
frequency, electromagnetic field
immunity test, 800 MHz to
1000 MHz
20 V/m
EN 61000-4-3 ed. 3
EMC Part 4-3: Radiated, radio-
frequency, electromagnetic field
immunity test, 1000 MHz to
2100 MHz
10 V/m
EN 61000-4-3 ed. 3
EMC Part 4-3: Radiated, radio-
frequency, electromagnetic field
immunity test, 2100 MHz to
2500 MHz
5 V/m
EN 61000-4-4 ed. 3
Electrical fast transient/burst
immunity test power supply
4 kV *)
EN 61000-4-4 ed. 3
Electrical fast transient immunity
test input
2 kV *)
EN 61000-4-5 ed. 2
EMC Surge immunity test, RS485
4 kV *)
EN 61000-4-5 ed. 2
EMC Surge immunity test, power
supply
4 kV *)
EN 61000-4-6 ed. 3
Immunity to induced disturbances,
induced by radio-frequency fields
10 V
*) Some disturbing noise can be heard in the speaker when disturbances
appear.
3.1. Other tests
This product was assessed and approved for use in railway applications
according to standards:
Tested in accordance
with standard
Type of test
Result
EN 50155:2007
Elecronic equipment used on rolling
stock
Complies
EN 50121-3-2:2006
Railway applications 
Electromagnetic compatibility Part 3-
2: Rolling stock Apparatus
Complies
EN 61373:1999
Railway applications Rolling stock
equipment Shock and vibration tests
Category 1,
Class B

RRAM-MCT/D20
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EN 61000-4-29:2000
Electromagnetic compatibility (EMC) 
Part 4-29: Testing and measurement
techniques Voltage dips, short
interruptions and voltage variations on
d.c. input power port immunity tests
Complies
EN 60068-2-1:2007
Environmental testing Part 2-1: Test
A: Cold
Complies
EN 60068-2-2:2007
Environmental testing Part 2-2: Test
B: Dry heat
Complies

RRAM-MCT/D20
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4. Power supply
The IP microtelephone RRAM-MCT/D20 can be powered by 24 V DC vehicle
onboard network.
Power supply terminals
Fig. 3 - Power supply connector location
24 V=
RRAM-MCT/D20
PWR
X2
SP+
SP-
Vcc
GND
PE
3
4
5
1
2
7
8
6
AD2
AD1
COM
X1
ETH
RJ45
X3
GNM
D-Sub DE-9
X4
AUX IN
BNC
Fig. 4 - IP microtelephone power supply wiring
Terminal
Label
Signal type on RRAM-MCT/D20
1
PE
Module chassis
2
GND
Power supply, ground
3
Vcc
Power supply, +24 V DC
The PE terminal must be connected with vehicle frame.
Wiring
example
Wiring of X2
connector
(power
supply)
Note:

RRAM-MCT/D20
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5. Digital inputs
IP microtelephone unit has two digital inputs intended for unit configuration.
Their meaning is given by user application.
Digital inputs
Fig. 5 - Location of connector with digital inputs
By coupling terminals AD1 and AD2 with common terminal COM is the input
activated. The not-connected input is inactive.
Terminal
Label
Signal type on RRAM-MCT/D20
6
COM
Common terminal for digital inputs
7
AD1
Digital input 1
8
AD2
Digital input 2
Using
Wiring of X2
connector
(inputs)

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13/22 rram-mctd20_g_en_100
6. Connecting a microphone
The microphone is connected to IP microtelephone unit through D-sub DE-9
connector. Microphone itself is not supplied together with microtelephone unit, it
must be ordered separately.
RRAS-GNM/AConnector
Fig. 6 - Location of connector for microphone
Terminal
Signal
Signal type on RRAM-MCT/D20
1
LED A

2
LED B

3
MIC-
Microphone, ground
4
MIC+
Signal from microphone, input
5
BCKL-
Buttons backlight powering
6
GND
Digital power supply ground
7
BUTT A

8
BUTT B

9
BCKL+
Buttons backlight powering
RRAM-MCT/D20
PWR
X2
SP+
SP-
Vcc
GND
PE
3
4
5
1
2
7
8
6
AD2
AD1
COM
X1
ETH
M12
X3
GNM
D-Sub DE-9
X4
AUX IN
BNC
RRAS-GNM/A
X1
MCT
D-Sub DE-9
Fig. 7 - Connection of RRAS-GNM/A microphone
Wiring of X4
connector

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6.1. Wiring of interconnection cable
The interconnection cable must be shielded.
D-sub DE-9 D-sub DE-9
Fig. 8 - Wiring of interconnection cable
D-sub DE-9 plug
D-sub DE-9 socket
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
Wiring of
cable pins

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15/22 rram-mctd20_g_en_100
7. Output for loudspeaker
To the IP microtelephone unit can be attached an auxiliary loudspeaker for
silent monitoring and sound indication. Style of loudspeaker support depends
on used application.
Loadspeaker terminals
Fig. 9 - Location of connector with terminals for external loudspeaker
Terminal
Label
Signal type on RRAM-MCT/D20
4
SP-
Loudspeaker for silent monitoring -
5
SP+
Loudspeaker for silent monitoring +
Loadspeaker
FR8WP8OHM (8  /15W)
+
-
RRAM-MCT/D20
PWR
X2
SP+
SP-
Vcc
GND
PE
3
4
5
1
2
7
8
6
AD2
AD1
COM
X1
ETH
RJ45
X3
GNM
D-Sub DE-9
X4
AUX IN
BNC
Fig. 10 - Connection of loudspeaker for silent monitoring
Wiring of X2
connector
(loudspeaker)

RRAM-MCT/D20
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8. Sound input
To the IP microtelephone unit can be connected a source of sound signal.
Support of this input depends on used application.
Soundinput connector
Fig. 11 - Location of connector for sound signal
The sound signal is connected through standard BNC connector.

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9. Ethernet
The Ethernet interface connector is located on the microtelephone unit front
side. LED indicators are located next to Ethernet connector.
Ethernet connector
Fig. 12 - Location of Ethernet line connector
Activity of Ethernet line is indicated by LEDs (LNK and ACT) next to Ethernet
connector. The SPD LED indicates attaching of 100 Mbps Ethernet network
cable, while ACT LED when blinking, indicates transmitting or receiving of data.
Details about Ethernet network are stated in Application Note AP0037.
Line status
indication
Note:

RRAM-MCT/D20
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10. Configuration
10.1. The RESTORE button
Factory setting of IP microtelephone unit is activated by pressing the button
RESTORE on the front panel while unit powering is switched on. The small
button can be pressed by blunt tiny stick like ballpoint refill etc. Release the
buuton after triple LED blink.
RESTORE
Fig. 13 - Location of RESTORE button
10.2. Factory setting –parameters
Parameter
Default value
Unit IP address
192.168.1.1
Network mask
255.255.255.0
Outgoing gateway
0.0.0.0

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11. Mounting
IP microtelephone unit RRAM-MCT/D20 is designed to mount into distributor.
Unit is fastened by four M4 screws.
11.1. Installation rules
Technical parameters of IP microtelephone unit are warranted only when this
wiring principles are applied.
Connect the PE terminal of X2 connector to the vehicle frame with as low as
possible impedance.
For service and when utilized within the distributor frame can be used an
unshielded cable (UTP patch cable). Apply the STP cabling for permanent use
outside the distributor frame.
Earthing
Ethernet
interface

RRAM-MCT/D20
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12. Ordering information and completion
12.1. Ordering information
RRAM-MCT/D20
Package, see chapter 12.2
12.2. Scope of delivery
Part
Quantity
Intercom for rolling stock
1
Connector counterpart WAGO769-108
1
Operation manual
1
Routine testing protocol
1
Insulation testing protocol
1
Warranty certificate
1
12.3. Accessories
RRAS-GNM/A
Microphone for rolling stock, Warranty certificate, Data sheet,
Routine testing protocol
Microtelephone
unit
Package
Microphone