Controller functions
Page 38
UPT-606
9.9
Temperature indication (actual
value output)
The UPT-606 supplies an analog 0…10VDC signal,
which is proportional to the real ACTUAL temperature,
at terminals 17+18.
Voltage values:
0VDC
0°C
10VDC
300°C
The relationship between the change in the output
voltage and the ACTUAL temperature is linear.
An indicating instrument can be connected to this
output in order to visualize the temperature of the hea-
ting element.
The characteristics of the ROPEX ATR-3 temperature
meter (size, scaling, dynamic response) are ideally
suited to this application and this instrument should
therefore always be used (
section 4 "Accessories
and modifications" on page 6).
It not only facilitates SET-ACTUAL comparisons, but
also enables other criteria such as the heating rate, set
point reached within the specified time, cooling of the
heating element etc. to be evaluated.
This meter moreover permits disturbances in the con-
trol loop (loose connections, contacting or wiring pro-
blems) as well as any line disturbances to be observed
extremely effectively and interpreted accordingly. The
same applies if mutual interference occurs between
several neighboring control loops.
This output is not potential-free and might
have the potential of the secondary voltage
of the impulse transformer. External grounding is
not allowed. If this warning is ignored, the con-
troller will be damaged by frame currents. Contact-
voltage protection must be installed at the termi-
nals of the external temperature meter.
If an alarm is signaled, the analog output at terminals
14+18 is used to display a selective error message
(
section 9.13 "Error messages" on page 40).
9.10
Booster connection
The UPT-606 controller has a connection for an
external switching amplifier (booster) as standard. This
connection (at terminals 15+16) is necessary for high
primary currents (continuous current > 5A, pulsed
current > 25A). The switching amplifier should be con-
nected as described in section 7.7 "Wiring diagram with
booster connection" on page 15.
UPT-606
24
max. 5mA
23
0V
R=33ohms
Actual value
output
0…10VDC
-
+
0…10VDC
Temperature
meter
e.g. ATR-3
0 - 300°C range
1
2
3
4
5
6
7
8
9 10
300
T
e
m
p
e
ra
tu
re
T
°C
20°C
"ZERO"
VDC
Voltage U
60
90
120
150
180
210
240
270
0.66V
!