Emerson Rosemount 1056, Instruction Manual

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AC Power switch shipped in the 230 VAC
position.
Adjust switch upwards to 115 VAC position
for 110 VAC – 120 VAC operation.
This power supply automatically detects DC power and
accepts 20 VDC to 30 VDC inputs.
Four programmable alarm relays are included.
Figure 3-1
Figure 3-2
This power supply automatically detects AC line condi-
tions and switches to the proper line voltage and line
frequency.
Four programmable alarm relays are included.
Figure 3-3
Switching AC Power Supply (-03 ordering
code) is shown below:
24 VDC Power Supply (-02 ordering code)
is shown below:
115/230 VAC Power Supply (-01
ordering code) is shown below:
22
3.3 Preparing Sensor Cable
The 1056 is intended for use with all Rosemount sensors. Refer to the sensor installation instructions for details on
preparing sensor cables.
3.4 Power, Output, and Sensor Connections
3.4.1 Power Wiring
Three Power Supplies are offered for Model 1056:
a. 115/230 VAC Power Supply (-01 ordering code)
b. 24 VDC (20 – 30V) Power Supply (-02 ordering code)
c. 85 – 265 VAC Switching Power Supply (-03 ordering code)
AC mains (115 or 230 V) leads and 24 VDC leads are wired to the Power Supply board which is mounted vertical-
ly on the left side of the main enclosure cavity. Each lead location is clearly marked on the Power Supply board.
Wire the power leads to the Power Supply board using the lead markings on the board.
The grounding plate is connected to the earth terminal of power supply input connector TB1 on the -01 (115/230
VAC) and -03 (85-265 VAC) power supplies. The green colored screws on the grounding plate are intended for
connection to some sensors to minimize radio frequency interference. The green screws are not intended to be
used for safety purposes.
CAUTION
Instruction Manual
LIQ-MAN-1056
Section 3.0: Wiring
April 2017