22
AGL_Sol_PEC_01_E_Rev01
4.7
Electronic expansion valve driver
PeC C100 and PeC C200 are able to drive a wide range of stepper valves.
Table 16
below shows the
connection details. The power supply of the PeC C100 requires a TF25D transformer; for PeC C200 a
TF50 transformer is required.
Connection
numbering
Emerson EXV
V4 valve
White
V2 valve
Brown
V3 valve
Black
V1 valve
Blue
Table 16: PeC valve connections
NOTE: The electrical power absorption of the valve is unrelated to its refrigeration power. Before
using the actuator, please read the technical manual supplied by the valve manufacturer and
check the maximum current used to drive the valve.
4.8
Variable speed compressor safety chain connection
4.8.1 EV3 drive to PeC
Communication between the EV3 drive and the PeC controller is standard 3-wires RS485 Modbus. The
following connections have to be made on the EV3 drive to use Modbus control mode:
▪
Enable/Safety (Safety Pressure Switch) (between pins 3 and 4 of the controller terminal);
▪
Modbus connection to RJ485 port.
Figure 21: Communication between PeC controller and EV3 drive
NOTE: For more information, please refer to Application Guidelines AGL_Sol_EV3 "EV3 Inverter
Drive for ZPV* Variable Speed Compressors" and AGL_AC_VS_YPV "Copeland Scroll Variable
Speed Compressors for R32 Applications
– YPV066* & YPV096*" or contact your local
Application Engineering representative at Emerson.