Radio Data Modem MOD 02

Transcription

1 Order information Name Type Part No. Radio Data Modem MOD AX 20mA Current Loop / TTY Interface 5V Supply Voltage FFSK Coding (Fast Frequency Shift Keying) Indicating LEDs for Transmit and Receive State Identification Frequencies: - at 2400 Baud: 1200/2400 Hz - at 1200 Baud: 1200/1600 Hz Explosion protection category / mode: I M 1 EEx ia I Usage and Functionality The Modem MOD02 serves to convert process data into a serial form transmissible by RF transmitter and receiver. Die process data can be exchanged via a serial interface or via attached ZM51 I/O modules. RF transmitter (HFS..) and RF receiver (HFE..) can be directly snapped onto the modem enclosure and be connected to the modem by an eight core ribbon cable connectors. The serial interface is built-in according to the specification of the socalled Bergbau Betriebsblatt BB22444 part 3 and part 4 as current loop interface (TTY). Optional the data exchange can be made with the RK512 procedure. The modem is controlled by a type 80C31 microcontroller. It s task is to buffer the incoming data stream of the TTY interface or from connected input modules, process the data application dependent and transmit it via the attached RF transmitter. On the opposite side the data stream received by the RF receiver is passed to the receive input of the modem and passed to the micro-controller. The received data are processed there again and then passed to the TTY interface (KL3 / KL4) or to connected output modules. The analogue part of the modem uses the FFSK method (Fast Frequency Shift Keying). By means of this the modem chip only requires a half-wave of the coding frequency to code or detect a symbol (bit). The identification frequencies of the modem are - at 2400 baud: 1200/2400 Hz - at 1200 baud: 1200/1600 Hz. The FFSK transmission signal comes on an eight-pole connector to the RF transmitter with a level of -6 dbm at 600 Ω. In addition the signal to activate/switch-on the RF transmitter (RTS = request to send) is lead also on this connector. Because the RTS signal, important for special multi-point connections, is not available on a normal interface according to BB22444, the micro-controller generates the signal out of the transmission data of the data terminal equipment (TXD). The RF receiver is connected through an eight-pole connector too. The digital circuits of the radio data modem MOD02 must be supplied with a 5 V system voltage (KL1.4 and KL1.5). Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 1

2 Dimensional drawing MOD02 Label Label Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 2

3 Block diagram MOD02 Connector RF-Transmitter n.c. Power supply Terminals LF in Channel Modem Chip R A M R O M Interface ZM51 I/O Bus Connector Connector RF-Receiver T on Divider LF in Channel Serial TTY Interface RxD TxD Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 3

4 Connection MOD 02 RF transmitter and receiver are separately supplied by a 12 V power supply on the plug-in terminals KL1.1 and KL1.2. The two plug-in terminals (KL1.3/KL1.4) connected in parallel to this can be used to supply the transmit and receive circuit of the TTY interface. On the two-pole terminal (KL2) the received field strength signal (RSSI = KL2.1) is available. The TTY interface to the data terminal equipment is led to two additional plug-in terminals (KL3 & KL4) with RxD=KL3 and TxD=KL4. Via two internal DIP-FIX switches (S2 / S3) on the modems PCB the TTY signals can be inverted. Two light emitting diodes (TX / RX) show the current transmit or receive state of the modem. A 8-fold DIL switch serves to set the radio data modem ("Station") address (Switch 1 to 5), the operation mode Master or Slave for the application Remote Control (Switch 7 ON = Master, OFF = Slave) and to generate a RESET signal (Switch 8, ON = RESET). Attention: The marking on the representation of the DIL switch on the MOD02 enclosure (0 to 6, RE- SET) differs from the marking on the DIL switch itself (1 to 8). Z51 I/O Bus Interface P. Supply 12 V P. Supply 5 V TTY interface Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 4

5 BB22444-Interface The Bergbau-Betriebsblatt BB part 3 and part 4 using the protocol DUST 3964R is basis of the interface specification between the radio data modem MOD02 and the respective communication partners. Through this the electrical specification, manner and count of the interface signals, the transmission protocol and the data frame formats are fixed. These can, however, be adapted on request to the different application areas of the modem MOD02 (e.g. remote radio controls, shaft radio communication, etc.) with special agreements/conventions. MR90 Radio Station MRST.. Power Supply Computer ZM51 I/O BUS Interface The modem MOD02 provides a ZM51 I/O BUS interface (ST2) to connect up to eight ZM51 I/O modules (The 5 V system voltage is provided by a Z51-FGW11E DC/DC converter). The connection is made with a ZM51 module connector cable (20-pole flat ribbon cable). ZM51 Modules Connector 20-pole ribbon cable ZM51 I/O Bus Interface ZM51 I/O Modules Power Supply with: NG3.. ib, NG2.. ia, or NV2.1-12iaE, or combination NG3.. ib + NV2.1-12iaE Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 5

6 Data Terminal Interface The modem MOD02 provides a data terminal interface with TTL level. This interface can be used for test purposes. Installation and Assembly The MOD02 must be mounted into a housing that ensures a minimum protection of IP 54 in accordance with EN The internal wiring (inside the housing) must be carried out in accordance with section of EN 50020:2002. The installation of the modem must ensure that the air gap between bare parts of the intrinsically safe circuits and bare parts of the housing is 3 mm in minimum. Contacts of the outer intrinsically safe circuits must be placed in a way that all bare parts have a minimum distance of 50 mm from contacts or bare conductors of not intrinsically safe circuits or must be separated by a partition wall in accordance to of EN50020:2002. Maintenance The MOD02 doesn't contain any parts to be maintained. Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 6

7 Setup / Setup notes MOD02 Via two internal DIP-FIX switches (S2/ S3) on the modem PCB the TTY signals can be inverted. Two light emitting diodes (TX / RX) show the current transmit or receive state of the modem. Two light emitting diodes (TX / RX) show the current transmit or receive state of the modem. A 8-fold DIL switch serves to set the modem stations address (1-5, 7 - Master/Slave) and to generate a RESET signal (8). St2: ZM51-I/O Bus Interface S1: Application dependent settings (S1/1 S1/7) and Generation of a Reset signal (S1/8) Application dependent settings S7: OTP Selection S4: Watchdog inactive active S5: Channel Selection Baudrate Battery Terminal Interface closed open Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 7

8 Technical Data MOD 02 Name Radio Data Modem Type MOD 02 Characteristic values Supply circuit 1 Plug-in Terminal KL1.1, KL1.3 KL1.2 Max. input voltage U i 12 V 0 V 15 V DC Supply circuit 2 Plug-in terminal KL1.5 5 V KL1.4 0 V Max. input voltage U i 5.5 V DC Max. input current I i 2 A 25 µf Signal circuit 2 Plug-in terminal KL2.1 KL2.2 RSSI GND 7.7 V DC 10 ma Optocoupler input/output circuit with potential isolation to connect intrinsically safe circuits of certified systems. (TTY interface, plug-in terminals KL3 and KL4) TTY input circuit with potential isolation (RxD) Plug-in terminal (KL3.1) +E (KL3.2) -E Max. input voltage U i 3 V UC Residual voltage at 15 ma 1,9 V Max. input current I i 40 ma TTY output circuit with potential isolation (TxD) Plug-in terminal (KL4.1) +U (KL4.2) +U/2 (KL4.3) L (KL4.4) +A (KL4.5 = KL4.6) -A Max. input voltage U i 13 V DC Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 8

9 Technical Data Residual voltage at 15 ma Max. input current I i 1.1 V 40 ma Intrinsic resistance 33 Ω The TTY input circuit and the TTY output circuit are safely isolated from each other and from the other circuits of the modem up to a sum of 30 V peak voltage. Modem Part Modulation mode Speed Modem chip control FFSK (Fast Frequency Shift Keying) 2400 Baud or 1200 Baud with micro-controller 80C31 Interface ZM51 I/O BUS Connection of up to 8 ZM51 I/O modules, (Male connector ST2) (ST2.1 to ST2.14, ST2.17, ST2.18, and ST2.19 resistor decoupled BUS signals ST V ST V DC 6.6 V DC depends on supply circuit 2 Terminal interface Signals: RxD, TxD, 0V, RTS Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 9

10 Technical Data Inputs / Outputs to the RF transmitter (female connector 3) Output supply circuit to the RF transmitter Female connector (ST3.8) +12 V (ST3.2, ST3.7) GND 15 V DC 107 ma Signal voltage Inputs / Outputs Female connector (ST3.3) Transmit signal (RxD) LF level Max. input voltage U i Control signal output to RF transmitter Female connector (ST3.4) Control signal inputs / outputs Female connector (ST3.6) (ST3.5) Max. input voltage U i NF-IN 1200 Hz / 2400 Hz -6dBm at 600 Ω 6.6 V DC 20 ma 7.7 V DC Channel 6.6 V DC 10 ma T x OK RTS 6.6 V DC 10 ma 7.7 V DC Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 10

11 Technical Data Inputs / Outputs to the RF receiver (Female connector 4) Output supply circuit to the RF receiver Female connector (ST4.8) +12 V (ST4.2, ST4.7) GND 15 V DC 107 ma Signal voltage Inputs / Outputs Female connector (ST4.3) (ST4.6) Receive signal (TxD) Receiving level Response threshold of receiving level control Time until DCD ok (ON-delay) Time until DCD off (OFF-delay) Synchronization time LF level Max. input voltage Ui Control signal inputs /outputs Female Connector (ST4.1) (ST4.4) (ST4.5) RF level monitor (Mute) Max. input voltage U i NF-OUT RSSI 1200 Hz / 2400 Hz -15 dbm to 0 dbm -18 dbm 6 ms 3 ms 20 ms -6 dbm at 600 Ω 6.6 V DC 10 ma 7.7 V DC T on Channel MUTE CMOS level 5V = level ok 6.6 V DC 10 ma 7.7 V DC Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 11

12 Technical Data Ambient temperature range Operation Storage Testing and certification Safety class Certificate number Dimensions Weight -20 C to +45 C -25 C to +70 C I M1 EEx ia I BVS 03 ATEX E 234 U see dimensional drawing approx kg Identification The MOD02 is labelled as follows: Company Type Production code Testing FHF Bergbautechnik D Velbert Germany MOD02 I M1 EEx ia I BVS 03 ATEX E 234 U 0158 (production code) (short sign, month/year) -20 C T a +45 C Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 12

13 Warning and safety instructions This explosion-proof intrinsically safe component, realized in safety-class group I, is designed for operation in hazardous firedamp areas. Please pay particular attention to the following warning and safety instructions: Any interconnection with other electric equipment must be separately certified. The equipment must be connected and installed in accordance with the prescribed (legal) installation instructions by a trained specialist, taking the specified protection class into account. This equipment must be connected and operated only with the specified voltage. For operation of the equipment in commercial facilities the local accident prevention regulations for electrical plants and operating supplies have to be observed. The equipment may only be operated in the ambient conditions specified. Unfavourable ambient conditions may damage the equipment and may possibly result into danger for the users life. Unfavourable ambient conditions could be: Air humidity too high (>75% rel., condensing) Moisture, dust (observe type of protection) inflammable gases, vapours, solvents, not covered by the protection class Ambient temperature too high (> +45 C) Ambient temperature too low (< -20 C). The ambient temperature for the equipment may not fall outside the specified range during operation. Keep only the specified operating modes. The equipment is intended for use in hazardous coal mining areas. Defective parts may be replaced only by original spare parts. Mounting and applying of additional parts is forbidden. Corrective maintenance may be executed only by the manufacturer or by a person apppointed by the manufacturer concluded with a renewed routine test of the equipment. The explosion protection isn't guaranteed any more, if the user doesn t follow the instructions above. FHF Bergbautechnik GmbH & Co. KG Eintrachtstr. 95 D Velbert Tel: +49 (0) Fax: +49 (0) Mail: info@fhf-bt.de URL : Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 13

14 Copyright FHF Bergbautechnik Subject to technical modifications without notice. Page 14