ECKELMANN UA 400, Руководство по эксплуатации

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Firmware V3.15 21.04.2021 61/401
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5.6 Humidification - Controller type UA 141 only
A humidifier can be controlled as an alternative to the 2nd temperature zone. This requires that the 2nd
temperature zone has not been selected. Only then can a setpoint be entered for humidifier on time. The
humidifier will then be operated for the set time every time cooling is stopped. If cooling restarts before the set
interval has expired, the humidifier will continue running for not more than 90 seconds.
5.7 Antisweat heaters
General
The frame and pane heaters are used to heat glass pane elements on refrigerated display cases so as to
prevent them from fogging due to condensation of moisture from the ambient air. The Case Controller enables
selection among three operating modes for these antisweat heaters:
Fixed on time
Setpoint-controlled on time (UA 131 only)
Enthalpy-controlled on time
The operating mode wanted must first be selected. Additional parameters for the respective mode are
described below.
Timing relay function for service counters (controller type UA 141 only)
A voltage pulse applied (e.g. by on-site pushbutton switch, min. 6 sec.) to the 230 V digital input for the frame
heater causes the corresponding relay of the Case Controller to energize and subsequently de-energize after
completion of the set pane heater on time. The same 230 V digital input is otherwise usable for manual
shutdown, in which case the timing relay function will not be available.
Control by on time
As an alternative to the method described below for control as a function of cooling setpoints, the frame heater
can be set to operate intermittently with an adjustable on time (0 to 100%). The full time interval is 10 minutes,
meaning that the frame heater will be ON for 1 minute and OFF for 9 minutes when set to 10%.
Control as a function of cooling setpoint (controller type UA 131, UA 131 DD only)
As an alternative to the method described above for control by on time, the frame heater can be controlled as a
function of working mode (supply air or return air mode) and the setpoint entered for the first temperature zone,
as shown below:
Return air mode
Return air setpoint -18°C, heating 40% ON
Return air setpoint > -20°C, heating 50% ON
Return air setpoint < -20°C, heating 60% ON
Supply air mode
Supply air setpoint -32°C, heating 75% ON
Supply air setpoint < -32°C, heating 95% ON
These percentage on rates mean that with a defined interval of 10 minutes the frame heater will be ON for 4, 5,
6, 7.5 or 9.5 minutes respectively. The frame heater is off during defrosting.
Operation of transistor output (91/92) for frame heater (controller types UA 111, UA 111 D, UA 121, UA
131, UA 131 DD, UR 141 NK (NT), UR 141 TK (LT))
Operation is inverted (factory setting). The transistor output (91/92) delivers a signal of 0 V when the frame
heater is ON and 24 V / 50 mA when the frame heater is OFF. The function can be configured via the parameter
„ Invert Output " (menu 2-5-2).
Operation of pane heater relay (controller type UA 141)
The relay (73/74) is closed when the pane heater is ON and is open when the pane heater is OFF.