Nordson VersaBlue VA, Руководство пользователя

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Time
Temperature
Setpoint Guided channel
10 °C
Setpoint Reference channel
Fig. 4‐17
Time
Temperature
Setpoint Reference channel
2 °C
Setpoint Guided channel
Fig. 4‐18
Operation 4‐24
P/N 213828_11
2014 Nordson Corporation
VersaBlue_PPA
Heatup Guided by Reference Channel
NOTE: All activated channels in control mode are included in the heatup
guided by reference channel, including those assigned to an activated
application group.
After every switchon (depending on the setting chosen by the customer in
software version 6.00.000 and higher) and after standby is exited, the melter
returns to
Heatup phase (status display).
*) Automatic heatup upon daily startup can be prevented with a button in the screen
Maximum temperature setpoint .
Heatup guided by reference channel prevents individual temperature
channels from reaching their setpoint temperature long before the slowest
temperature channel (reservoir/high melt = reference channel). It prevents
hot melt material from charring in hoses/guns and the build-up of material
expansion pressure during heatup. It also helps to save energy.
The actual reservoir temperature serves as the current temperature setpoint
for the other guided channels until the reservoir has reached a temperature
of 10 °C (18 °F) below its setpoint temperature. Then heatup guided by
reference channel ends automatically. This way all channels reach their
setpoint temperatures more or less at the same time.
When the current temperature setpoint of a guided channel (= actual value of
reservoir/high melt) reaches the guided channel's own setpoint minus 2 °C
(3,6 °F), it is excluded from heatup guided by reference channel and then
heats to its own setpoint independently (Refer to Fig. 4‐18).