Installation Guide 2003-02-8/ Ver. C
Contents.... General... 2 Board Description... 2 3 Installation... 4 3. Mounting... 4 3.2 Opening the Housing... 4 3.3 Mounting together with other Units... 5 3.4 Wiring Runs... 5 3.5 Addressing... 6 3.6 Selection of A or B-Bus... 7 3.7 Connecting Supply Voltage and Buses... 7 4 Connection to External Equipment... 7 4. RS232C Communication with External Unit... 8 4.2 RS422 Communication... 9 4.3 Data Link Communication... 9 4.4 RS485 Communication... 9 4.5 Connecting AUX Inputs and AUX Outputs... 0 4.6 Switch SW02... 0 5 Installation Test Procedure... 6 Circuit Board Replacement... 2 2003-02-8/ Ver. C
Figure... General T942SI is a serial interface that is used to connect external equipment to On Site Paging System and System 5000. T942SI is designed to communicate with the external unit via an interface of type RS232C, RS422, or RS485. The interfaces are galvanically isolated for up to 500 V. All the inputs and outputs have transient protection, and all bus connections are equipped with chokes for increased EMC protection. As a complement to this installation guide see also the applicable system installation document: TD 90227GB for system 900 or TD 920GB for system 5000. Supply voltage: 2.5 V DC ± 0% Current consumption: Max 500 ma Delivery includes: T942SI Modular system bus cable Optional equipment that may be required: If T942SI is to be used for speech pagings, speech module T94SM must be mounted on the T942SI circuit board. If the external unit is to be connected to 8-pin modular connector J09 on the T942SI for RS232C communication, adapters can be ordered from ATAB for 9-pin and 25-pin D-sub connectors. See 4. RS232C Communication with External Unit on page 8. Tools, etc., required: Screwdriver Cutting pliers Screws for installation Multimeter 2003-02-8/ Ver. C
Soldering iron and solder 2 Board Description S02 LEDO4 LEDO LEDO5 ICO SWO IC5 IC4 ICO8 IC32 S04 SWO2 8 J04 LEDO2 LEDO3 BAT S03 S06 S07 S05 S08 S09 J0 J02 J09 J03 6 J07 6 J08 5 Figure 2. Circuit board T942SI. Connectors J0, J02: Modular jacks for connection of system bus cabling. J03: Supply voltage. Also for connection of A or B-bus via twisted-pair wiring when modular bus cabling cannot be used. 2003-02-8/ Ver. C 2
J04: Connects speech module T94SM. J07: Connects AUX Input and AUX Output. J08: Connects external computer with RS422/RS485 interface. J09: Modular jack for connection of external computer with RS232C interface. Jumpers S02: Jumper points used for software development. S03: Jumper points used to connect battery. S04: Jumper points used for Mbit RAM. S05: Jumper points used to convert from RS422/RS485 to RS232C. S06: Jumper points used for RS485 interface. S07: Jumper points used for RS422 interface. S08, S09: Jumper points used to connect to B-bus. Switches SW0: SW02: LEDs LED0A LED0B LED02: LED03: LED04: LED05: IC-Circuits IC0: IC08: IC4, IC32: IC5: 8-section address selector switch. 8-section selector switch used to set various parameters for hardware tests, etc. Normally all sections are set to OFF. Green function indicator. Red function indicator. Indicates during paging. Not used. Indicates during transmission to external computer. Indicates during reception from external computer. Microprocessor, type 80C88EB. Module key. 4 Mbit FLASH PROMs, program memory. RAM memory with battery backup. It can be either Mbit or 4 Mbit. 2003-02-8/ Ver. C 3
3 Installation 3. Mounting T942SI should be placed in a dry environment with a temperature range of 0 to +40ºC. Dimensions (H x W x D) 275 x 30 x 60 mm 56,5 2 9 9 88,5 275 65 30 Figure 3. Mounting dimensions in mm. Note: To facilitate service after the unit is installed, we recommend a free space of about 50 mm below and 50 mm above the unit. 3.2 Opening the Housing Use a screwdriver or similar to release the cover by applying a light pressure to the two snap catches () and remove the cover (2). 2 Figure 4. Realising the cover. 2003-02-8/ Ver. C 4
3.3 Mounting together with other Units Figure 5. Mounting with other units. Remove upper and lower covers. The lower rectangular covers are used to fasten units to each other (). 2 Fasten the output module with three screws, see 3. Mounting on page 4. 3.4 Wiring Runs The plastic partition (shaded in the illustration) is scored to facilitate breaking at convenient intervals. 2 3 4 5 6 2 Slots Figure 6. Wiring of modular or twisted pair cabling, () and (2). Use pliers to break off a suitable section. 2 Run the wiring out through the partition. 3 Use the slots at the opening to secure the wiring with cable straps. 2003-02-8/ Ver. C 5
Wiring can be run four ways for connection with other units: 4 4 3 2 3 2 Figure 7. Four ways of wiring runs. Remove the rectangular covers and run the cabling out through the side (). Break off sections at short side of case and run the cabling downwards (2). Run the cabling through the round holes at the bottom of the case (3). Remove the circular covers at the top of the side case (4). 3.5 Addressing Select the proper address by setting address selector switch SW0 (see the document System Installation, under Addressing). The address must not be 00 nor the same as any other system unit. OFF ON SW0 8 Figure 8. Addressing on T942SI. 2003-02-8/ Ver. C 6
3.6 Selection of A or B-Bus R092 S08 R093 S09 Figure 9. Position of the 0 ohm resistors and jumpering points. A-bus is normally used (always used in CTS 900). To use B-bus: Remove the 0 ohm resistors R092, R093 from the circuit board and solder together jumper points S08 and S09. See figure 9. 3.7 Connecting Supply Voltage and Buses Supply voltage in Supply voltage out A or B-bus J03 +2V 2 GND 3 4 5 BUS 6 BUS 2 Figure 0. Connector J03. Connect the supply voltage to screw and 2 of screw connector J03. (See also the document System Installation, under Power Supply.) 2 Connect modular bus cabling to J0 and J02, and/or A or B-bus to J03 screw 5 and 6. Note: The data lines are polarized. Use only twisted-pairs for two-wire connections! 4 Connection to External Equipment The external unit is to be connected to J09 on the T942SI for RS232C communication, or to J08 for RS422/RS485 communication. Note: The T942SI is configured for RS232C communication at delivery from the factory. 2003-02-8/ Ver. C 7
4. RS232C Communication with External Unit Connect the external unit to the 8-pin modular connector J09 on the T942SI according to the applicable drawing below. Connects directly to external unit with RS232C Interface 9-pin female D-sub connector RX 2 TX 3 DTR 4 GND 5 6 7 CTS 8 9 J09 T942SI (not used) 2 TX 3 RX 4 CTRL IN 5 CTRL OUT 6 (not used) 7 GND 8 (not used) Figure. Connection to a 9-pin female D-sub connector. Note: Modems with 25-pin D-sub connectors, the RTS and CTS signals must be jumpered - i.e. pin 4 to 5. Connects via modem to external unit with RS232C Interface 25-pin male D-sub connector TX 2 RX 3 RTS 4 CTS 5 6 GND 7 DCD 8 J09 T942SI (not used) 2 TX 3 RX 4 CTRL IN 5 CTRL OUT 6 (not used) 7 GND 8 (not used) DTR 20 25 Figure 2. Connection to a 25-pin male D-sub connector. Adapters with the correct connections can be ordered from ATAB for both the 9-pin and 25-pin D-sub connectors. 2003-02-8/ Ver. C 8
4.2 RS422 Communication S06 S07 S05 R065 S03 S04 S06 S07 S05 R065 S08 S09 J09 J08 J07 J0 J02 J09 J03 6 J07 6 J08 5 Figure 3. Resistor R065 and soldering points S05-S07. Disable the RS232C interface by removing 0 ohm resistor R065. 2 Solder together jumper points S07. 3 Connect the external unit to J08. to exernal unit using RS422 communication Rb Ra Tb Ta J08 Tb 2 Ta 3 Rb 4 Ra 5 GND Figure 4. Connection of external unit to J08 using RS422 connection. Note: If the RS232C interface is to be used in the future it can be restored by soldering together jumper points S05. 4.3 Data Link Communication Connect the external unit according to figure 4 on page 9, RS422 Communication. After start-up, if function indicator, LED0 flashes green at a slow intervals, the connection of the Data Link is incorrect. 4.4 RS485 Communication Disable the RS232C interface by removing 0 ohm resistor R065. See figure 3 on page 9. 2 Solder together jumper points S06. See figure 3 on page 9. 2003-02-8/ Ver. C 9
3 Connect the external unit to J08. to exernal unit using RS485 communication Rb/Tb Ra/Ta J08 Tb 2 Ta 3 Rb 4 Ra 5 GND Figure 5. Connection of external unit to J08 using RS485 connection. Note: If the RS232C interface is to be used in the future it can be restored by soldering together jumper points S05. See figure 3 on page 9. 4.5 Connecting AUX Inputs and AUX Outputs Two digital inputs and two digital outputs can be connected via J07. The output signals are dimensioned for 00 ma at max 2 V. J07 External +2 V 2 IN 3 IN2 4 OUT 5 OUT 2 6 External 0 Vdc Figure 6. Connector J07. Galvanic isolation of the inputs and outputs is provided by using a separate power supply. When galvanic isolation is not needed, supply voltage can be taken from the T942SI circuit board by connecting J07: to J03:3 and J07:6 to J03:4. 4.6 Switch SW02 Normally all 8 sections of SW02 are set to OFF. When the setting of any section is changed, the Central Unit must be restarted to make the change effective. Switch settings to hexadecimal values between 80H and FFH are reserved for hardware testing. Section : Section 2: Section 3: Section 4: Section 5: Section 6: Used to sent module information to the Central Logger of the WinBK. ON = Send OFF = Do not Send Not used, must be set to OFF. Not used, must be set to OFF. Not used, must be set to OFF. Used to set the module in programmable mode. Used only by PSP2 protocol. ON = Programmable Mode; OFF = Normal (Operational) Mode. Not used, must be set to OFF. 2003-02-8/ Ver. C 0
Section 7: Section 8: Not used, must be set to OFF. Not used, must be set to OFF. 5 Installation Test Procedure Check that SW0 is set to the correct address and SW02 is set for desired parameters, and that module key IC08 is installed. 2 Energize all the units in the On Site Paging System. Function indicator LED0 on T942SI should light red for about second and then go over to a flashing orange. If it continues to indicate with a steady red check that supply voltage is 2.5 V DC ± 0%. Flashing indicates a fault as follows: Colour ON OFF Fault red 00 ms 800 ms Incorrect software license red 800 ms 00 ms Parameter fault red s s Watchdog reset green 00 ms 800 ms No Data-link connection Function indicator Figure 7. Function indicator. 3 If the T942SI is connected to a central unit the indicator should show a steady green indication within 90 seconds. If the indicator continues to blink orange, check: Polarity Connections on the T942SI circuit board. T942SI is properly addressed. If everything seems to be OK but the function indicator still blinks, the fault is probably located outside the T942SI module. Check the other system units according to the document System Installation or contact your dealer. 2003-02-8/ Ver. C
4 Replace the cover. When all other units are installed perform the system test described in the applicable System Installation document: TD 90227GB for system 900 or TD 920GB for system 5000. 6 Circuit Board Replacement Deenergize the unit. 2 Remove the cover. 3 Lift off the screw connectors from the circuit board. 4 Press the four holding clips to release the circuit board () and release the circuit board (2), (3). The heat sink is mounted on the circuit board and is replaced simultaneously. 3 2 Figure 8. Removing the circuit board. 5 Install the new circuit board in the case and make sure the board clicks into position. 6 Set all switches and jumpers as they were on the old circuit board and replace the connectors. 7 Remove the module key from the old circuit board and install it on the new circuit board. 8 Reinstall the applicable software. 9 Check installation according to 5 Installation Test Procedure on page. 2003-02-8/ Ver. C 2