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12. Test operation and setting methods
Operation control selection
Control system
switch setting position
4) Analog signal
control
Analog signal control
RDSW01
a 4 to 20 mA signal
Analog input selection
SW3
a 1 to 5 mA signal
Analog input selection
SW3
Analog input selection
SW3
Settings [4]
• When analog signal control is set, the condensing unit operates at an
operating speed proportional to the analog signal.
• Be sure to set the operating control setting switch to match the signal
being input.
• In analog signal control, the operating pressure and cut-off pressure
setting switch, and the cut-in pressure setting switch do not need to be
Operation control
set.
selection
(Setting them has no effect on control)
• Set the operating speed setting switch to 5 (maximum operating speed).
Also, enter the settings according to the table below when the maximum
operating frequency is defined for other reasons. Analog control is
When using
performed using the set operating frequency as the maximum operating
frequency.
• Once setting is complete, switch the condensing unit power supply
(breaker) ON to start operation.
When using
Control operation
• Operation starts once delay control (maximum duration approximately
3 minutes) is complete after power supply activation. For 90 seconds
after startup, the operating speed is constant at 40 Hz. Afterward, the
condensing unit operates at a speed set in accordance with the input
signal.
• The frequency control specifications are as follows.
Maximum
When using
operating
frequency
a 1 to 5 V signal
Compressor
operating
frequency
• When the input signal is changed, the change rate is 2 Hz/s until the
target operating speed is reached.
• When using a general-purpose analog output temperature adjuster for
control, ensure that a warning output contact is included for stopping the
condensing unit.
• The condensing unit stops when the low-pressure value is −0.03 MPa or
less, regardless of whether the analog input signal is within the operating
range of the condensing unit.
Control setting method and control operations
Compressor operation speed via operation speed selection switch
Operation speed selection switch*
Model name
[0]
WAM600AR-SV-8 40 Hz 50 Hz 60 Hz
* The operation speed selection switch may be raised over a maximum frequency
setting for each model, but cannot be set higher than the maximum frequency.
Maximum operation frequency set via
operational speed selection switch
Analog input signal (DC current, voltage)
Minimum operating speed
Off point (W) On point (X)
Input voltage
0.3 V
(1 V to 5 V DC)
Input current
0.3 mA
(1 mA to 5 mA DC)
Input current
1.2 mA
(4 mA to 20 mA DC)
34
(continued)
[1]
[2]
[3]
[4]
70 Hz
Operating range
Stopping
Operating range and
stopping range
(Y)
0.6 V
1.0 V
0.6 mA
1.0 mA
2.4 mA
4.0 mA
[5] – [9]
range
Maximum
operating
speed
(Z)
5.0 V
5.0 mA
20.0 mA
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