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Siemens Types NRK 16-T../A Manual page 6

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INTEGRAL RSA
Application controllers
1)
Inputs and jumpers
Caution
The incorrect positioning of jumpers
can give rise to offset voltages when
active signal transmitters are connec-
ted (failure to reach a zero-point).
Selection of T1 or Ni1000 sensor
Both T1 and Ni1000 sensors can be connected to the RSA application
controllers. DIP switch S182 is used to adapt the controller to the required
sensor type. External access to this DIP switch is possible after removal of
the NSA plug-in application module. The change-over from one sensor type
to the other is applied in blocks of eight and three inputs (UI01...UI08 and
UI09...UI11 respectively).
Rotary address
switch
Firmware
T1/Ni1000
switch
Application
Slot for NSA
module
Settings for switch S182 T1/Ni1000
1
2
Sensor
OFF
T1
OFF
T1
ON
Ni1000
1)
ON
Ni1000
1)
The factory setting is T1
Disabling the sensor supply voltage
The pull-up resistors (Ri = 10kW) for the T1 and Ni1000 sensor supply volt-
age can be disabled individually at inputs A (UI101) to J (UI10) with jumpers
X310 to X420. This process is required whenever devices are connected
which are unable to sink current.
The jumpers are located on the printed circuit board and cannot be adjusted
without opening the controller housing.
When delivered from the factory, the jumper settings are such that the sensor
supply voltage is enabled. To disable the supply, each jumper must be
moved one position to the left.
UI01 ... UI05
X301
View of part of the PCB: In this example, apart from X350 and X360 (T1/Ni1000 supply
OFF) all the jumpers are shown in their factory-set position.
D120
S182
D140
Inputs
UI01 to UI08
UI09 to UI16
UI01 to UI08
UI09 to UI16
51068A
K21-04.10
6/8
en - 06.2001
00414
Battery
ON
OFF
UI06 ... UI10
X302

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