Owner manual

48 Watlow Series 935B User’s Manual
Specifications
• Height
• Length
• Width
Specifications—(1951)
Control Mode
• Auto-tune PID.
• PID, PD, PI, on/off.
• Countdown timer; hours:minutes, minutes:seconds.
• Timer output modes; Delay-off, Delay-on, Signal-off, Signal-
on.
Agency Approvals
• UL/C-UL 508, File #E102269.
• NEMA 4X
1
(IP65) rated front panel.
• 89/336/EEC Electromagnetic Compatibility Directive:
EN 50081-2: 1994 Emissions;
EN 50082-2: 1995 Immunity.
• 73/23/EEC Low-voltage Directive:
EN 61010-1: 1993 Safety.
Operator Interface
• Single, seven-segment digital display, factory selectable red
or green.
• Outputs/operation annunciators, three discrete LEDs.
• Three tactile feedback momentary switches.
• Front panel lock dry contact closure disables front panel
operation.
Accuracy
• ±0.25% of span +/- 1 LSD, or
• Types S and T thermocouple @
< 200°C, ±0.32% of span +/- 1 LSD, typical.
Ambient Rejection
• < 0.15°C/°C rise in ambient, or
• Types S and T thermocouple, @ < 0.47°C/°C rise in ambient
typical.
Sensors/Inputs
• Sensor input sampling rate: 10 samples/second (10Hz).
• Type E, J, K, N, S and T thermocouple, grounded or
ungrounded junction.
• RTD, two-wire 100Ω base (DIN) resistance.
• Dry contact closure on RTS input enables remote timer start
function or front panel lock, depending on menu selection.
Input Range
Specified temperature ranges represent the controller's oper-
ational span.
Thermocouple
Type E -328 to 1470°F
(-200 to 799°C)
Type J 32 to 1382°F
(0 to 750°C)
Type K -328 to 2282°F
(-200 to 1250°C)
Type N 32 to 2282°F
(0 to 1250°C)
Type S 32 to 2642°F
(0 to 1450°C)
Type T -328 to 662°F
(-200 to 350°C)
RTD Resolution (DIN)
1° -328 to 1292°F
(-200 to 700°C)
0.1° -199.9 to 999.9°F
(-128.8 to 537.7°C)
Control Output
• Output update rate: 1/second (1Hz).
1 Output
• Switched dc logic signal, 6VÎ (dc) @ 60mA nominal, short
circuit protected, non-isolated (Watlow DIN-a-mite® power
controller compatible).
2 Output
• Switched dc logic signal, 6VÎ (dc) @ 60mA nominal, short
circuit protected, non-isolated (Watlow DIN-a-mite® power
controller compatible).
Output Cycle Time
• Switched dc; 5.0 second default, 0.1 second minimum.
Line Voltage/Power
• 100-240V~ (ac) +10%, -15%; (85-264V~ [ac]) 50/60Hz, ±5%.
• Fused internally (factory replaceable only) time-lag type, 2A,
250V.
• Power consumption 6VA maximum.
• Data retention upon power failure via non-volatile memory.
Operating Environment
• 32 to 149°F (0 to 65°C).
• 0 to 90% RH, non-condensing.
Storage Temperature
• -40 to 185°F (-40 to 85°C).
Terminals
• Touch-safe set screw type, accepts 22 to 12-gauge wire.
Controller Weight
• 4.0 oz (113.4 g).
Shipping Weight
• 7.3 oz (208 g).
These specifications are subject to change without prior notice.