Dwyer 8600 - Manual (Page 37)

December, 1998 Page 37 949-1277-3
SPECIFICATIONS
Selectable Inputs: Thermocouple, RTD, DC Voltage, or DC Current
selectable.
Input Impedance:
Thermocouple = 3 megohms minimum. RTD current = 200 µA.
Current = 10 ohms. Voltage = 5000 ohms.
Sensor Break Protection: De-energizes control output to protect system
after customer set time. (See InPt in Secondary Menu.)
Set Point Range: Selectable (See Range Chart Page 39).
Display: Two 4 digit, 7 segment; vertical 7.62mm (0.3") high LEDs;
horizontal 10mm (0.4") high LEDs.
Control Action: Reverse (usually heating), Direct (usually cooling) select-
able.
Proportional Band: 1 to 9999 °F, °C, or counts.
Reset Time (Integral): Off or 0.1 to 99.9 minutes.
Rate Time (Derivative): Off or 0.01 to 99.99 minutes.
Cycle Rate: 1 to 80 seconds.
On - Off Differential: Adjustable 1° F, 1° C, or 1 count to full scale in 1° F,
1° C, or 1 count steps.
Alarm On - Off Differential: 1° F, 1° C, or 1 count.
Fuzzy Percent: 0 to 100%.
Fuzzy Rate: Off or 0.01 to 99.99 minutes.
Fuzzy Band: Off or 1 to 4000 °F, °C, or counts.
Accuracy: ±0.25% of span, ±1 least significant digit.
DIAGNOSTIC ERROR MESSAGES
DISPLAY
ArEA
(Alter-
nates
with PV)
ArEA
MEANING
This message ap-
pears if the ambient
temperature of the
control approaches
the ends of tol-
erence.
This message ap-
pears if the ambi-
ient temperature of
the control is out of
range or RJC sen-
sor is broken.
SP OUTPUTS
Set point
outputs active
Alarm active
Set point
outputs active
Alarms active
ACTION REQUIRED
Correct the ambient tempera-
ture conditions. Ventilate the
area of the cabinet or check
for clogged filters. If RJC bro-
ken, return to factory for ser-
vice.
Correct the ambient tempera-
ture conditions. Ventilate the
area of the cabinet or check
for clogged filters. If RJC bro-
ken, return to factory for ser-
vice.