To distribute current for the 24 Vdc I/O power segment(s) and TM7 power bus, and according to the power distribution description, the following modules and blocks are connected to an external power source:
oTransmitter module (TM5SBET7)
oPower Distribution Block (PDB)
oI/O blocks
Source power for these can come from one or more supplies. Your requirements are dictated by:
ovoltage and current needs
oisolation requirements
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HAZARD OF ELECTRIC SHOCK, EXPLOSION, OVERHEATING AND FIRE |
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oDo not connect the modules directly to line voltage. oUse only isolating PELV systems according to IEC 61140 to supply power to the modules. oConnect the 0 Vdc of the external power supplies to PE (Protective Earth/ground). |
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Failure to follow these instructions will result in death or serious injury. |
Wiring the Transmitter Module (TM5SBET7)
The TM5SBET7 is the connection to the external 24 Vdc power supply and the beginning of the power distribution for the TM7 remote configuration. The power is supplied by one external isolated power supply depending on current needs and capabilities.
The following figure shows the wiring of the TM5SBET7 wired with one external 24 Vdc power supply:
(2) External fuse, Type T slow-blow, 1 A, 250 V
PS1 External isolated power supply, 24 Vdc
NOTE: Connect the 0 Vdc power circuits together and to the functional ground (FE) of your system to meet the EMC requirements.
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HAZARD OF ELECTRIC SHOCK, EXPLOSION, OVERHEATING AND FIRE |
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oDo not connect the modules directly to line voltage. oUse only isolating PELV systems according to IEC 61140 to supply power to the modules. oConnect the 0 Vdc of the external power supplies to PE (Protective Earth/ground). |
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Failure to follow these instructions will result in death or serious injury. |
The TM7SPS1A (PDB) reinforces the TM7 power bus. Power is supplied by one external isolated power supply depending on current needs and capabilities.
The following figure shows the wiring of the PDB with one power supply:
(1) External fuse, Type T slow-blow, 1 A minimum, 4 A maximum, 250 V
(2) Maximum current 4 A
PS1 External isolated main power supply, 24 Vdc
NOTE: Connect the 0 Vdc power circuits together and to the functional ground (FE) of your system to meet the EMC requirements.
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HAZARD OF ELECTRIC SHOCK, EXPLOSION, OVERHEATING AND FIRE |
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oDo not connect the modules directly to line voltage. oUse only isolating PELV systems according to IEC 61140 to supply power to the modules. oConnect the 0 Vdc of the external power supplies to PE (Protective Earth/ground). |
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Failure to follow these instructions will result in death or serious injury. |
When you provide power to a TM7 I/O block using the 24 VDC Power OUT connector of the preceding I/O block, both blocks occupy the same 24 Vdc I/O power segment. However, if you connect an external isolated power supply to the 24 Vdc Power IN connector of a TM7 I/O block, you establish a new 24 Vdc I/O power segment beginning with that I/O block.
When beginning a new 24 Vdc I/O power segment, select an external isolated power supply sufficient to the power requirements of the I/O blocks planned for that segment. For more information, refer to 24 Vdc I/O Power Segment Description.
The following figure shows a I/O block wired with one external 24 Vdc power supply:
(3) External fuse, Type T slow-blow, 8 A maximum, 250 V
PS2 External isolated I/O power supply, 24 Vdc
NOTE: Connect the 0 Vdc power circuits together and to the functional ground (FE) of your system to meet the EMC requirements.
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HAZARD OF ELECTRIC SHOCK, EXPLOSION, OVERHEATING AND FIRE |
|
oDo not connect the modules directly to line voltage. oUse only isolating PELV systems according to IEC 61140 to supply power to the modules. oConnect the 0 Vdc of the external power supplies to PE (Protective Earth/ground). |
|
Failure to follow these instructions will result in death or serious injury. |
