RIA45 Wiring
Endress+Hauser 11
5 Wiring
L
WARNING
Danger! Electric voltage!
‣
The entire connection of the device must take place while the device is de-energized.
‣
The ground connection must be made before all other connections. Danger if protective
ground is disconnected.
‣
Before commissioning the device, make sure that the supply voltage matches the
voltage specifications on the nameplate.
‣
Provide suitable switch or circuit breaker in building installation. This switch must be
provided close to the device (within easy reach) and marked as a circuit breaker.
‣
Provide overload protection (nominal current ≤ 10 A) for power cable.
• Observe the terminal designation on top of the device.
• It is permitted to connect a mixture of safety extra low voltage and voltage which
poses a shock hazard to the relays.
5.1 Connecting the device
A loop power supply (LPS) is provided for every input. The loop power supply is primarily
provided to supply power to 2-wire sensors and is galvanically isolated from the system
and the outputs.
RTD
I
LPS 2-W
LPS 4-W
TC
U<=1V
U>1V
CH1
CH2
Typ J,K,T,N...
±100mV...±1V
4-W
3-W
2-W
0/4...20mA
0...10V
0/1...5V
±10V
±30V
4...20mA 0/4...20mA
Analog Out
4...20mA
x2
x4
x8x7x6x5
x4
x8
x2x1
x4
x8
x2x1
x8x7
x8x7
x8
x3
232221
25 26 27
28
24
131211
15 16 17
18
14
x4
x8
R12 R11 R13 R22 R21 R23
L|+ N|-
A0010228
3 Terminal assignment of the device (channel 2 and relays as an option)
If long signal cables with high-energy transients can be expected, we recommend
fitting a suitable surge arrester upstream.
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