Panasonic Urban Multi MX1R Series Service Manual page 450

PACD011001C2
„ When condition (Th6 – Te < 5) remains for 3 continuous minutes in steps higher than step 1-2, EVs of
„ From 24 HP model or higher, the fan (M12F) on the inverter box side stops if operating at fan tap (3) or
„ In this control, the compressor load increase based on PI calculation is conducted once every 2
∗ Tfin: Inverter fin temperature.
3.1.5 Compressor Capacity Control
INV Compressor Operating Frequency
The operating frequency changes in the following steps.
„ PA-16·18·20MA
Function UM Combination "MA1R Series" Using R-407C
all indoor units in thermostat-OFF status are set to 200 pls. This is canceled when Th6 – Te > 15. (for
prevention of wet operation in cooling operation when outside temperature is low)
Th6 – Te: Suction pipe temperature – Evaporation temperature
lower. Therefore, Tfin switches M11F OFF and M12F ON.
®­ ¬
M11F : H / L / OFF
M12F : OFF
minutes. The load decrease operation is conducted once every 20 minutes.
Frequency
NO.
INV STD
1 29Hz OFF
2 31Hz OFF
3 33Hz OFF
4 35Hz OFF
5 37Hz OFF
6 39Hz OFF
7 41Hz OFF
8 43Hz OFF
9 46Hz OFF
10 48Hz OFF
11 52Hz OFF
12 55Hz OFF
13 58Hz OFF
14 62Hz OFF
15 64Hz OFF
16 67Hz OFF
17 71Hz OFF
18 75Hz OFF
19 37Hz ON
20 41Hz ON
21 46Hz ON
22 52Hz ON
23 58Hz ON
24 64Hz ON
25 71Hz ON
26 79Hz ON
T fin > 87˚C
O
T fin < 67˚C
„ PA-24~30MA
Frequency
NO.
INV STD1
1 29Hz OFF
2 31Hz OFF
3 33Hz OFF
4 35Hz OFF
5 37Hz OFF
6 39Hz OFF
7 41Hz OFF
8 43Hz OFF
9 46Hz OFF
10 48Hz OFF
11 52Hz OFF
12 55Hz OFF
13 58Hz OFF
14 62Hz OFF
15 64Hz OFF
16 67Hz OFF
17 71Hz OFF
18 75Hz OFF
19 37Hz ON
20 41Hz ON
21 46Hz ON
22 52Hz ON
23 58Hz ON
24 64Hz ON
25 71Hz ON
26 41Hz ON
27 52Hz ON
28 64Hz ON
29 79Hz ON
Outline of Control
M11F : OFF
M12F : ON
(V0820)
STD2
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
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