Ariens Path-Pro 136E User Manual Page 59

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Appendix
Series 920 Specifications
Control
Mode
.
Microprocessor-based, user selectable modes.
.
Single input, dual control outputs, dual auxiliary outputs.
.
99 step programmer with up to
10
profiles.
l
Control outputs: User selectable as: Heat, Heat/Cool, Cool, Cool/Heat.
l
Outputs independent, or related via dead band.
l ON/OFF:
3°F
(1.7°C)
switching hysteresis.
l
PID
parameters.
Proportional band: 0 to
900°F
(0 to
500°C),
or 0 to 500 units, 0.0 to
90.0°F
(0.0 to
50.0°C)
for
0.l°
RTD inputs.
Reset: 0.00 to 5.00 repeats per minute.
Rate: 0.00 to 5.00 minutes.
Rate band: 0 to 7 times proportional band.
Cycle time:
1
to 60 seconds.
l
Deadband:
±36°F
±20°
C),
±
20 units.
l
Auxiliary outputs: User selectable as:
l
Event per step or alarm.
l
Process or
deviation
value per output.
l Latching or non-latching.
l
Separate
high
and low values per output.
Operator interface
l
Membrane front panel.
.
Four digit
1/2”
(13 mm)
LEDs
display actual process input value.
.
LED indication of
°F,
°C,
or process variable units.
.
MODE, ENTER, UP, DOWN, and RUN/HOLD keys.
.
Eight character alphanumeric display of operating data.
Input
Thermocouple,
RTD
and electrical process input.
Lead resistance effect for
“J”
type thermocouple input:
2OO ohm
of lead resis-
tance will cause less than
1°F
error. Refer to the lead wire manufacturer’s
specification on ohms per double foot for the type and gauge of wire used.
Automatic cold junction compensation for thermocouple.
RTD input 2 or 3 wire, platinum, 100 ohms @
0°C,
calibrated to
JIS
curve
#3916
(0.003916 ohms/ohms/°C or DIN curve #3850 (0.003850 ohms/ohms/°C
Se
lectable
in the RTD parameter under the SPCLFUNC menu
Sensor break protection de-energizes control outputs to protect system.
Isolated or grounded sensor. Isolated sensors must be used with process
inputs or outputs.
100K ohms input impedance for 0-5 volt input.
250 ohms input impedance for 4 - 20mA input.
-
Operating ranges user selectable.
J
t/c:
32 to
1382°F
or 0 to
750°C
K t/c:
-328 to
2282°F
or
-200
to
1250°C
T t/c: -328 to
662°F
or -200 to
350°C
R tic:
32 to
2642°F
or 0 to
145O°C
S
t/c:
32 to
2642°F
or 0 to
1450°C
B t/c: 392 to
3092°F
or 200 to
1700°C
RTD:
-328 to
1112°F
or -200 to
600°C
0.1° RTD: -99.9 to
392.0°F
or -99.9 to
200.0°C
0-5VDC:
-99 to 1800 units
4-20mA:
-99 to 1800 units
WATLOW
Series
920 User’s Manual
59
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