Huber Pilot ONE Unistat T3*0, Operation Manual

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Interfaces and software update
Chapter 6 OPERATION MANUAL
V2.4.0en/22.07.20//17.12
Unistat® T300 Series
79
▪ „2. setpoint selective”:
An open contact causes a thermoregulation to its original setpoint. A
closed contact causes a thermoregulation to the second setpoint.
▪ “Internal / Process”: If the contact is open, the device-internal temperature sensor is used for
control. If the contact is closed, the additionally connected external temperature sensor is used
for control. Switching the contacts open/closed or closed/open switches between these two tem-
perature sensors.
▪ “Temperature control on/off”:
The temperature control process starts when switching from an
open to a closed contact. The temperature control process switches off when switching from a
closed to an open contact.
▪ “Release”: The temperature control process switches off, if the temperature control process is
active and the contact is switched from closed to open. The temperature control process is not
switched on , if contact is further switched from open to closed!
▪ “Reset Messages”:
All messages in the Pilot ONE are reset (if possible) if the enable signal chang-
es from “open” to “closed”. Resetting is delayed in the event of a fault until the temperature con-
trol unit is in stand-by mode. Messages can be reset as often as required, but faults can be reset
only 3 times.
▪ “Program 1 Start/Stop”: The temperature control program 1 is started if the enable signal chang-
es from “open” to “closed”. The temperature control program is stopped when changing from
“closed” to “open”.
▪ “Fill level alarm”:
When switching from closed to open contact, an alarm is triggered if the fill
level is too low. For this purpose, a level sensor must be connected and placed in the > sight
glass< [23] or in the external application.
▪ “Fill level warning”: When switching from closed to open contact, a warning is generated if the fill
level is too low. For this purpose, a level sensor must be connected and placed in the > sight
glass< [23] or in the external application.
The interface is specified as a digital input. Do not apply voltage or current.
Pin Signal
1.3 E2
2 E1
6.2.1.3 Connector POKO (floating contact) alarm
Signal contact for external monitoring.
Notice the functions provided by PoKo in the category “Interfaces”. The potential-free contact
(PoKo) signals the state of the temperature control unit via the contact position. A closed operating
contact means readiness for operation. If a fault or an error occurs, the operating contact is opened
(this applies to the make contact between pin 1 and pin 2).
The following settings are offered:
▪ “Off”: The POKO displays the OK state whenever the temperature control unit is ready for opera-
tion. The unit is ready for operation about 30 seconds after switching on, once the internal con-
troller check has been completed. The OK status is terminated by switching off the unit or in case
a fault occurs.
▪ “Internal temperature relative": Set the upper and lower limit of a temperature range around
the setpoint by using the POKO “min. value” and the POKO “max. value”.
The potential-free contact indicates the condition, that the setpoint differs from the actual value
by a smaller difference than was defined by the temperature range. Exceeding the set range only
results in the potential-free contact to switch (away from the OK state), but does not result in fur-
ther reactions of the temperature control unit. The contact returns to the OK status if the actual
value is within that range.
Pin assignment (front
view)
Pin assignment