Endress+Hauser Proline Prosonic Flow 93 Operating Instructions Manual page 24

Installation
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24
Connecting the power supply
Warning!
When connecting Ex-certified devices, please refer to the notes and diagrams in the Ex-specific
supplement to these Operating Instructions. Please do not hesitate to contact your Endress+Hauser
sales office if you have any questions.
Note!
The measuring device does not have an internal power switch. For this reason, assign the measuring
device a switch or power-circuit breaker which can be used to disconnect the power supply line
from the power grid.
Connecting the power supply
Warning!
• Risk of electric shock. Switch off the power supply before opening the device. Do not install or
wire the device while it is connected to the power supply. Failure to comply with this precaution
can result in irreparable damage to the electronics.
• Risk of electric shock. Connect the protective ground to the ground terminal on the housing
before the power supply is applied (not required for galvanically isolated power supply).
• Compare the specifications on the nameplate with the local supply voltage and frequency. The
national regulations governing the installation of electrical equipment also apply.
1. Remove the cover of the connection compartment from the transmitter housing.
2. Route the power supply cable through the cable entries.
3. Wire the power supply cable.
4. Tighten the cable gland.
A
a
Fig. 17: Connecting the power supply; cable cross-section: max. 2.5 mm
a Cable for power supply: 85 to 260 V AC, 20 to 55 V AC, 16 to 62 V DC
Terminal No. 1: L1 for AC, L+ for DC
Terminal No. 2: N for AC, L- for DC
a1 Ground terminal for protective ground
Proline Prosonic Flow 93 FOUNDATION Fieldbus
L1 (L+) N (L-)
–
+ +
1 2 20 21 22
A
a a1

(14 AWG)
– – –
+ +
23 24 25 26 27
A0011363
Endress+Hauser