Startup Control
SiME341909EA
60
Part 4 Functions and Control
4. Startup Control
Before starting the compressor:
The capacitor is charged in the DC circuit of the inverter circuit, and
“Pre-pressure equalization” is performed to reducing the starting current of the compressor.
Pc: High pressure sensor detection value
Pe: Low pressure sensor detection value
Ta: Outdoor air temperature
Te: Low pressure equivalent saturation temperature
4.1 Cooling Startup Control
120 seconds
Approx. 550 V
Step 4
ON
ON
OFF
OFF
OFF
0 V
Thermostat
signal
DC circuit
capacitors
Fan motor(s)
M1F: RXQ6/8AR
M1F + M2F: RXQ10-16AR
Solenoid valve
oil return
0 Hz
0 Hz
Step4
Te < 10˚C
Te < Th2(
∗
) – 10
&
Ta < 20˚C: OFF
Ta
≥
20˚C: Step4
0 pulse
Frequency step up
5 sec. interval
+1step/15 sec. (Pc > 2.16 MPa)
–1step/15 sec. (Pc < 1.77 MPa)
Compressor 1
(M1C)
Compressor 2
(M2C)
Electronic expansion
valve (Injection)
(Y2E)
Inverter fan
M1F: RXQ6/8AR
M1F + M2F: RXQ10-16AR
∗
RXQ14/16AR only
Pc – Pe > 0.21 MPa
∗
Th2 in "Pre-pressure
equalization"
Summary of Contents for VRV X RXQ10ARYFK
Page 1: ...Service Manual Cooling Only 50 60 Hz RXQ6 48A N R Series SiME341909EA...
Page 289: ...SiME341909EA Wiring Diagrams Part 7 Appendix 283 RXQ10 12ARYFK 2D124184...
Page 290: ...Wiring Diagrams SiME341909EA 284 Part 7 Appendix RXQ14 16ARYFK 2D124183...
Page 295: ...SiME341909EA Wiring Diagrams Part 7 Appendix 289 FXMQ40 50 63 80 100ARV1 3D127112 04 59...
