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Air and Water cooled inverter chillers and heat pump
D-EOMZC00105-17EN
Operation Manual
50/84
EWAD TZ - EWAD TZ B -EWWD VZ
Air and Water cooled inverter chillers and
heat pump
2203
Deceleration Time
10 s
10 s
2603
IR compensation Volt
10.5
10.5
2604
IR comp. frequency
50%
50%
2606
Switching Frequency
8kHz
8kHz
2609
Noise Smoothing
Enable
Enable
2618
FW voltage
400 V
400 V
3006
Motor Thermal Time Constant
350 s
350 s
3104
AR Overcurrent
Enable
Enable
3108
AR External Fault
Disable
Disable
9906
Motor In
4.0 A
2.7 A
9908
Motor Speed
900 rpm
700 rpm
9909
Motor Power
1.2 kW
0.7 kW
Inverter parameter list
– 2 fan control
Parameter
Description
Fan Type
AC900
AC700
1611
Param View
Long View
Long View
1002
Ext commands
NOT SEL
NOT SEL
1301
Min AI1
0%
0%
1601
Run Enable
DI1
DI1
1604
Fault Reset
DI1
DI1
2006
Undervoltage
Enable
Enable
2101
Start Function
AUTO
AUTO
2202
Acceleration Time
10 s
10 s
2203
Deceleration Time
10 s
10 s
2603
IR compensation Volt
10.5
10.5
2604
IR comp. frequency
50%
50%
2606
Switching Frequency
8kHz
8kHz
2609
Noise Smoothing
Enable
Enable
2618
FW voltage
400 V
400 V
3006
Motor Thermal Time Constant
350 s
350 s
3104
AR Overcurrent
Enable
Enable
3108
AR External Fault
Disable
Disable
9906
Motor In
8.0 A
5.4 A
9908
Motor Speed
900 rpm
700 rpm
9909
Motor Power
2.4 kW
1.4 kW
5.4 Condensation Control (W/C units only)
Condenser Entering Water Temperature is controlled in order to achieve best chiller efficiency within
compressor envelope limits. To do this, application manages the outputs for the control of the following
condensation devices:
Tower fan #1…4 by mean of 4 on/off signals. Tower fan # state is on when Cond EWT is greater then
the Cond EWT setpoint. Tower fan # state is off when Cond EWT is lower then Setpoint
– Diff. The
picture below represents an example of activation and deactivation sequence based on Cond EWT
present value relation with set points and differentials listed in 4.2.5.