Primary Output (Heating or Cooling)
l
Solid state relay,
0.5A
@
24VAC
minimum,
253VAC
maximum,
opto-
isolated, zero cross switching.
l
Electromechanical relay, Form
C,
6A
@
115/230VAC,
6A
@
28VDC,
1/8
hp.
@
115VAC
125VA
@
115VAC.
Warranted to 100,000 cycles.
l
Open collector, switched DC signal provides a minimum turn ON voltage of
3VDC into a minimum 500 ohm load, maximum ON voltage not greater than
32VDC into an infinite load.
l
4-20mA
reverse acting into a 600 ohm maximum load.
Secondary Output (Heat, Cool or Alarm)
l
Solid state relay,
0.5A
@
24VAC minimum, 253VAC maximum,
opto-
isolated, zero cross switching.
.
Electromechanical relay, Form A, 6A
@
115/230VAC,
6A
@
28VDC,
1/8
hp.
@
115VAC,
125VA
@
115VAC.
Warranted to 100,000 cycles.
l
Open collector, switched DC signal provides a minimum turn ON voltage of
3VDC into a minimum 500 ohm load; maximum ON voltage not greater than
32VDC into an infinite load.
Accuracy
l
Calibration Accuracy: ± 0.1% of span, ± 1 LSD,
77°F ±
5°F
(25°C
±3°C)
ambient
&
rated line voltage
±
10%.
l
Accuracy Span: 1000°F or
540°C
minimum.
l
Temperature Stability: 0.1
°F/°F
(0.1
°C/°C)
change in ambient.
l
Voltage Stability: ± 0.01% of span per percent of rated line voltage.
Agency Approvals
l
UL recognized, File
#E43684,
UL873
l
CSA file
#LR30586
Terminals
l
#6
compression type screw terminals
Power
.
115/230VAC
+1
0%,
-15%,
50/60Hz,
±
5%
.
10VA maximum
l
Data retention upon power failure via nonvolatile memory
Operating Environment
l
32 to 1
30°F/0
to
55°C.
l
0 to
9O%
RH,
non-condensing.
Dimensions
(985 orientation) For 980 units, switch height and width measurements.
l Height:
3.8 in.
l Width:
1.9 in.
l Overall depth:
6.3 in.
l
Behind panel depth:
6.0 in.
l Weight:
0.9 lb.
(96.5 mm)
(48.0 mm)
(160.5 mm)
(152.5 mm)
(0.4
kg)
Appendix
WATLOW
Series
980/985
User’s Manual
35