Carel MuC2SE, Руководство пользователя

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22
µC
2
SE process c030220416
- rel. 2.3 - 17.05.2018
6. CONTROL
6.1 Anti-freeze
The anti-freeze probe is B2. The anti-freeze set-point A01 represents the temperature below which the machine passes to anti-freeze mode: alarm
A1 activates and switches the alarm output. The value of A01 is limited by A07. A03 is the intervention delay time of the anti-freeze alarm when
starting the machine.
A01
B2
ON
A02
OFF
Key
A01 Anti-freeze set-point
B2 Anti-freeze probe
A02 Anti-freeze differential
6.2 Anti-freeze automatic switch-on
The parameter A10 has effect if the unit is in stand-by.
A10 = 1: auxiliary heater (if enabled) and pump are on at the same time on the basis of the set point A04;
A10 = 2: do not select;
A10 = 3: heaters only on, on the basis of the set point A04.
6.3 Anti-freeze with EVD
4
With the EVD
4
driver connected, A14 represents the evaporation temperature transmitted by the driver, below which the anti-freeze alarm is
activated; when the alarm is active, the compressors in the circuit affected are switched off, while the pump remains on to reduce the possibility of
freezing. Reset (manual or automatic, see par. P05) only occurs when the water temperature exceeds A14+A02
ON
OFF
t
ALARM
S3
A14 + A02
A14
A1
Key
A14 Anti-freeze EVD
4
alarm set-point
A02 Differential
S3 evaporation temperature probe
t time
6.4 Compressors management
Digital outputs at relay (par. c01, c02, c03, c04, c05)
The parameters in question regard the minimum operating times or switch-off times of the same output or different outputs, with the purpose of
protecting the compressor and preventing regulation oscillations.
!
For the times set to become operational, switch the controller off and back on again after programming.
Protection for the output at relay (par. c01, c02, c03)
c01 establishes the minimum activation time of the output, independently from request. c02 establishes the minimum switch-off time if the output,
independently from request. c03 establishes the minimum time between two successive switch-ons of the same output.
Par. Description Def Min Max U.M.
A01 Anti-freeze alarm set-point 3 A07 A04 °C/°F
A07 Anti-freeze alarm set-point limit -40 -40 176 °C/°F
A02 Anti-freeze alarm differential 5 0.3 122 °C/°F
A03 Anti-freeze alarm delay time from switch-on 0 0 150 s
Par. Description Def Min Max U.M.
A10 Anti-freeze automatic switch-on
0 = Disabled 1 = Heaters and pumps on simultaneously on A4
2 = Do not select 3 = Heaters on at A4 0 0 3 -
Par. Description Def Min Max U.M.
A14 Anti-freeze EVD
4
alarm set point 3 A07 A04 °C/°F
A02 Anti-freeze alarm differential 5 0,3 122 °C/°F
Par. Description Def Min Max U.M.
c01 Compressor minimum switch-on time 60 0 999 s
c02 Compressor minimum switch-off time 60 0 999 s
c03 Delays between switch-ons of the same compressor 360 0 999 s