Watlow Electric Series 97 - Manual (Page 2)

Specifications
Controller
• Microprocessor-based
• Universal input 1, auxiliary input 2, 4 outputs
• Input sample period; Single input 10Hz (100 msec),
dual input 5Hz (200 msec) digital filter adjustable
• Display update; 2Hz (500 msec), time filter adjustable
• Input/Output/Communication isolation
• Displayed in °C, °F
Operator Interface
• Dual 4-digit LED displays: upper 10.2 mm (0.4 in.),
lower 6.2 mm (0.244 in.)
• Advance, Up Arrow, Down Arrow, Reset tactile keys
Standard Conditions For Specifications
• Ambient temperature 77°F (25°C) ±3°C, rated line
voltage, 50 to 60Hz, 0 to 90 percent RH
non-condensing,
15 minute warm-up
Universal Input 1
Thermocouple
• Type J, K, T, N, C (W5), E, PTII, D (W3), B, R, S
thermocouple types
• >20M
Ω
input impedance
• Maximum 20
Ω
source resistance
• 30mA open detection bias
RTD
• 2- or 3-wire platinum, 100
Ω
• JIS and DIN curves
• Whole or tenth degree indication
• 150µA nominal RTD excitation current
Input 2
Event Input
• Contact or voltage
• 20K
Ω
input impedance
• Voltage input: event high state 3 to 36V Î (dc),
event low state 0 to 2V Î (dc)
• Resistance/contact input: event high state > 23k
Ω
,
event low state 0 to 2k
Ω
Output Types
Open Collector/Switched DC
• Open collector configuration:
Maximum voltage 42V Î (dc)
Maximum current 200mA
Maximum “on” resistance 1.1
Ω
Maximum offstate leakage current 100µA
• Switched dc configuration:
Switched dc supply voltage 22 to 28V Î (dc)
dc supply current limited to 30mA
Solid State Relay
• Optically isolated
• Zero cross switched
• Without contact suppression
• Minimum load current 0.5mA rms
Solid State Relay (cont.)
• Maximum current 0.5A rms at 20 to 280V
Å (ac)
• Maximum offstate leakage current 10µA rms
• For resistive loads only, must use RC suppression for
inductive loads
Electromechanical Relay
• Form C contact configuration
• Minimum load current 10mA @ 5V
Î (dc)
• Rated resistive and inductive loads: 2A @ 250V Å (ac)
or 30V Î (dc) maximum
• Electrical life 100,000 cycles at rated current
• For resistive loads only, must use RC suppression for
inductive loads
Retransmit
• Range selectable: 0-20mA, 4-20mA, 0-5V
Î (dc),
1-5V Î (dc), 0-10V Î (dc)
• 0 to 10V Î (dc) voltage output into a 1,000
Ω
minimum
load resistance
• 0 to 20mA current output into an 800
Ω
maximum load
resistance
• Resolution:
Vdc ranges = 2.5mV nominal
mA ranges = 5µA nominal
• Calibration accuracy:
Vdc ranges = ±15mV
mA ranges = ±30µA
• Temperature stability 100ppm/°C
Communications
• EIA/TIA-485, EIA/TIA-232
• Opto-isolated
• Modbus
TM RTU protocol
• 1200, 2400, 4800, 9600, 19200 baud rates
• 32 maximum units can be connected (With additional
485 repeater hardware, up to 247 units may be
connected)
Accuracy
• Input ranges
Type J: 0 to 750°C or 32 to 1382°F
Type K: -200 to 1250°C or -328 to 2282°F
Type T: -200 to 350°C or -328 to 662°F
Type N: 0 to 1250°C or 32 to 2282°F
Type E: -200 to 900°C or -328 to 1470°F
Type C(W5): 0 to 2315°C or 32 to 4200°F
Type D(W3): 0 to 2315°C or 32 to 4200°F
Type PTII: 0 to 1393°C or 32 to 2540°F
Type R: 0 to 1450°C or 32 to 2642°F
Type S: 0 to 1450°C or 32 to 2642°F
Type B: 870 to 1700°C or 1598 to 3092°F
DIN: -200 to 800°C or -328 to 1472°F
JIS: -200 to 630°C or -328 to 1166°F
Modbus TM is a trademark of AEG Schneider Automation.