Watlow Electric 988 Weather Radio User Manual


 
A.4 WATLOW Series 988 User’s Manual
Appendix
Specifications
Control Mode
Dual input, quad output, optional retransmit of set
point or process variable.
Programmable direct and reverse acting control out-
puts.
One-step auto-tuning.
Operator Interface
Local/remote set point capability.
Dual, 4-digit LED displays: upper, 0.4” (10mm); lower,
0.3” (8mm).
Mode, Auto/Man, Display, Up and Down keys.
Input
Contact input for software function select.
Type J, K, T, N, C(W5)
2
, D(W3)
2
, E, R, S, B, Pt 2
2
thermocouple, 1° or 0.1° RTD.
0-50mVÎ (dc), 0-20mA, 4-20mA, 0-5VÎ (dc), 1-5VÎ
(dc), 0-10VÎ (dc) process.
Slidewire, digital event input or heater current options.
Sensor break protection de-energizes control output to
protect system or selectable bumpless transfer to
manual operation. Latching or non-latching.
°F or °C display or process units, user selectable.
Sensor Ranges
J t/c: 32 to 1500°F or 0 to 816°C
K t/c: -328 to 2500°F or -200 to 1371°C
T t/c: -328 to 750°F or -200 to 399°C
N t/c: 32 to 2372°F or 0 to 1300°C
R t/c: 32 to 3200°F or 0 to 1760°C
S t/c: 32 to 3200°F or 0 to 1760°C
B t/c: 1598 to 3300°F or 870 to 1816°C
E t/c: -328 to 1470°F or -200 to 799°C
C t/c (W5)
2
: 32 to 4200°F or 0 to 2316°C
D t/c (W3)
2
: 32 to 4200°F or 0 to 2316°C
Pt 2
2
: 32 to 2543°F or 0 to 1395°C
1°RTD (JIS): -328 to 1166°F or -200 to 630°C
1°RTD (DIN): -328 to 1472°F or -200 to 800°C
0.1°RTD
(JIS and DIN):-99.9 to 999.9°F or -73.3 to 537.7°C
0-5VÎ (dc): -999 to 9999
1-5VÎ (dc): -999 to 9999
0-10VÎ (dc): -999 to 9999
0-20mA: -999 to 9999
4-20mA: -999 to 9999
0-50mVÎ (dc):-999 to 9999
Slidewire: 100 to 1200
Current: 0 to 50A
Potentiometer: 0 to 1200
Output Options
Solid-state relay, 0.5A @ 24VÅ (ac) min., 253VÅ (ac)
max., opto-isolated, burst fire. With or without contact
suppression.
Open collector: Max. voltage 42VÎ (dc), max. current
1A.
Switched dc signal: Min. turn-on voltage of 3VÎ (dc)
into min. 500load; max. On voltage not greater than
32VÎ (dc) into an infinite load, isolated.
Electromechanical relay
1
, Form C, 5A @ 120/240VÅ
(ac), 6A @ 28VÎ (dc), 1/8 hp. @ 120VÅ (ac) or
125VA @ 120VÅ (ac). With or without contact sup-
pression. Off-state output impedance with RC sup-
pression is 20k.
Process, 0-20mA, 4-20mA into 800maximum, 0-
5VÎ (dc), 1-5VÎ (dc) or 0-10VÎ (dc) into 1kmini-
mum
1
, reverse acting, isolated.
Electromechanical relay, Form A/B, 5A @ 120/240VÅ
(ac), 6A @ 28VÎ (dc), 1/8 hp. @ 120VÅ (ac) or
125VA @ 120VÅ (ac). Without contact suppression.
External transmitter power supply, 5V ±5% @ 30mA,
12V ±5% @ 30mA or 20V ±5% @ 30mA.
EIA/TIA-232 communications or EIA/TIA-485, EIA/TIA-
422 communications, opto-isolated.
Accuracy
Calibration accuracy and sensor conformity: ± 0.1% of
span, ±1 LSD, 77°F ± 5°F (25°C ± 3°C) ambient and
rated line voltage ±10%.
Accuracy span: 1000°F (540°C) minimum.
Temperature stability: ± 0.2°F/°F (0.1°C/°C) change in
ambient.
Voltage stability: ± 0.01% of span /% of rated line volt-
age.
Agency Approvals
UL, C-UL File #43684
CE: 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.
NEMA 4X
Terminals
#6 compression universal head screws (tighten to 5
inch/pounds maximum), accepts 20-14 gauge wire.
Line Voltage/Power
100 to 240VÅ
1
(ac) +10%/-15%, 50/60Hz, ± 5%.
24 to 28V
1
(ac/dc) +10%/-15%, 50/60Hz, ±5%.
16VA maximum.
Fused internally (factory replaceable only) Slo-Blo®
type (time-lag): 2A, 250V for high-voltage versions;
5A, 250V for low-voltage versions.
Non-volatile memory retains data if power fails.
Operating Environment
32 to 149°F (0 to 65°C), 0 to 90% RH, non-condens-
ing.
Storage Temperature
-40 to 185°F (-40 to 85°C).
Mechanical
• 1/8 DIN panel mount, NEMA 4X (IP65 equivalent) front
panel.
• Overall width x height x depth:
horizontal - 4.03" x 2.18" x 4.74"
(102mm x 55mm x 120mm);
vertical - 2.18" x 4.03" x 4.74"
(55mm x 102mm x 120mm).
• Depth behind panel; 4.06" (103mm).
• Weight: less than or equal to 14.0oz (0.40kg).
Sample/Update Rates
1 input: 10Hz.
2 inputs: 5Hz.
Retransmit: 1Hz.
Remote set point: 1Hz.
PID: 10Hz.
Outputs: 10Hz.
Display: 2Hz.
Alarm Outputs: 1 Hz
Resolution
Inputs: 16 bits.
Outputs: 12 bits.
1
Electromechanical relays are warranted for 100,000 clo-
sures only. Solid-state switching devices are recom-
mended for applications requiring fast cycle times or
extended service life.
2
Not an ANSI symbol.
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