www.DaikinApplied.com 15 IM 1240-4 • INTELLIGENT EQUIPMENT
Connection of Rogowski Coil CT’s to
Power Supply
(Not on Gateway-on-the-Go, IE Express, or
WMC kits)
Unlike a standard split-core CT, the Rogowski coil CT’s have
a built-in amplier/integrator that must be powered. You will
receive a 24VAC to 24VDC power supply with a terminal strip,
which is used to power the three Rogowski coil CT ampliers.
You must rst secure the terminal strip to the control panel
backplane using the provided sheet metal screws. Then,
connect the Red wire from each Rogowski coil CT to the
Vout (24VDC+) terminal block, and the Black wire from each
Rogowski coil CT to the GND (Vout) terminal block (Figure 27).
The power supply is provided with a length of cable for
connecting it to 24VAC in the unit control enclosure. On an
AGZD or AGZE chiller, terminal Vin on the power supply should
be connected to terminal TB2-42 or TB2-43, and terminal GND
(Vin) on the power supply should be connected to terminal
TB2-81, TB2-83, or TB2-84 (Figure 29). On an AWV chiller,
terminal Vin on the power supply should be connected to
terminal MS-10, and terminal GND (Vin) on the power supply
should be connected to terminal MS-20 (Figure 30). On an
AWS chiller, terminal Vin on the power supply should be
connected to terminal MQ-10, and terminal GND (Vin) on the
power supply should be connected to terminal MQ-20 (Figure
31).
NOTE: Always conrm terminal designations on unit As-Built
wiring diagram.
Figure 27: Rogowski Coil Terminal Block
Installing Spilt-Core CT’s
(Not on Gateway-on-the-Go, IE Express, or
WMC kits)
Current Transformers (CT’s) are split-core type, to make
installation easier. Snap split-core CT connected to EMM
terminal CT_A on phase L1, snap split-core CT connected
to EMM terminal CT_B on phase L2, and snap split-core CT
connected to EMM terminal CT_C on phase L3 (Figure 28).
Ensure that the “Load” indicator on the CT is oriented correctly.
Figure 28: CT Installation
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