Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
366
Note
If binary inputs are used for trip circuit monitoring, note that two binary inputs (or one binary input and an equiv-
alent resistor) are connected in series. The switching threshold must be significantly less than one half
of the
rated control voltage.
Contact Mode for Binary Outputs
Input/output modules can have relays that are equipped with optionally NO or NC contacts. For this it is nec-
essary to rearrange a jumper. For which relay on which board this applies is described in this Section under
„Input/Output Board C–I/O -2“ and „Input/Output Board C–I/O -6“.
Measured Value Transformer
The measuring transducers TD 1 (e.g. for DC voltage/DC current protection) and TD 2 (e.g. for input of tem-
perature for overload protection) can process either voltage or current values. To change the default setting
(measured values to be voltages) jumpers must be changed. Tables in this Section give an overview under „In-
put/Output Board C–I/O-6“.
Caution!
False connection for „Current“ jumper setting!
If with "Current" jumper setting an input voltage is applied, this may destroy the board.
For an input voltage, the "Voltage" jumper must set.
For measuring transducer TD 3 (detects e.g. excitation voltage for underexcitation protection) an analog low-
pass can be activated or deactivated by jumpers. For detailed information, see the table under margin titel „In-
put/Output Board C–I/O-6“.
Note
The jumper settings must correspond to the mode set at addresses 295, 296 (voltage or current input) and
297 (with/without filter). Otherwise the device is blocked and outputs an alarm.
Replacing Interfaces
The serial interfaces can only be exchanged in the versions for panel flush mounting and cubicle mounting.
Which interfaces can be exchanged, and how this is done, is described in this Section under the margin title
„Replacing Interface Modules“.
Terminating Resistors for RS485 and Profibus DP (electrical)
For reliable data transmission, the RS485 bus or the electrical Profibus DP must be terminated with resistors
at the respective last device on the bus. For this purpose termination resistors are provided on the PCB of the
C-CPU-2 processor board and on the RS485 or PROFIBUS interface module which can be connected via
jumpers. Only one of the three options may be used. The physical location of the jumpers on the PCB is de-
scribed in this Section under the margin title „Processor Board C–CPU-2“, and under the margin title „Bus-
Capable Serial Interfaces“ for the interface modules. Both jumpers must always be plugged in the same way.
The terminating resistors are disabled on unit delivery.
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