Omega FC-21 - Manual (Page 6)

2
FC-21 Flow Computer
1.3 Specifications:
Specifications:
Environmental
Indoor Use
Altitude up to 2000m
Operating Temperature: 0°C to +50°C
(-20°C to 55°C optional)
Storage Temperature: -40°C to +85 C
Maximum Relative Humidity : 80% for temperatures
up to 31°C decreasing linearly to 50% RH at
40°C
Mains supply voltage fluctuations not to exceed ±10%
of the nominal voltage
Transient overvoltage according to INSTALLATION
CATEGORY II (see UL 3101-1 Annex J)
POLLUTION DEGREE 2 in accordance with
IEC 664 (see 3.7.3)
Materials: UL, CSA, VDE approved
Approvals: CE Approved Light Industrial,
UL File #: E192404
CSA Pending
Display
Type: 2 lines of 20 characters
Types: Backlit LCD or VFD ordering options
Character Size: 0.3" nominal
User selectable label descriptors and units of
measure
Keypad
Keypad Type: Membrane Keypad
Keypad Rating: Sealed to Nema 4
Number of keys: 16
Enclosure
Size: See Dimensions
Depth behind panel: 6.5" including mating connector
Type: DIN
Materials: Plastic, UL94V-0, Flame retardant
Bezel: Textured per matt finish
Equipment Labels: Model, safety, and user wiring
Power Input
The factory equipped power option is internally fused.
An internal line to line filter capacitor is provided for
added transient suppression.
Order Option 1: 110VAC: 85 to 127 Vrms, 50/60 Hz
Order Option 2: 220VAC: 170 to 276 Vrms, 50/60 Hz
Order Option 3: 12VDC: 10.5 to 14 VDC
Order Option 4: 24VDC: 18 to 24 VDC
Flow Inputs:
Analog Input:
Ranges
Voltage: 0-10 VDC, 0-5 VDC, 1-5 VDC
Current: 4-20 mA, 0-20 mA
Basic Measurement Resolution: 16 bit
Update Rate: 5 updates/sec minimum
Automatic Fault detection: Signal over/under-range,
Current Loop Broken
Calibration: Self Calibration and Auto-zero
Continuously
Extended calibration: Learns Zero and Full Scale
of each range using special test mode.
Fault Protection:
Fast Transient: 500 V Protection
(Capacitive Clamp)
Reverse Polarity: No ill effects
Over-Voltage Limit: 50 VDC Over voltage
protection
Over-Current Protection: Internally current
limited Protected to 24 VDC.
Pulse Inputs:
Number of Flow Inputs: one
Configurations supported: single input with or
without quadrature (menu selectable)
Input Impedance: 10 KΩ nominal
Pullup Resistance: 10 KΩ to 5 VDC (menu
selectable)
Pull Down Resistance: 10 KΩ to common
Trigger Level: (menu selectable)
High Level Input
Logic On:
3 to 30 VDC
Logic Off: 0 to 1 VDC
Low Level Input (mag pickup)
Selectable sensitivity: 10 mV & 100 mV
Minimum Count Speed: User selectable
Maximum Count Speed: Selectable: 0 to 20kHz
Overvoltage Protection: 50 VDC
Fast Transient: Protected to 500 VDC
(Capacitive Clamp)
Compensation Input
The compensation input is menu selectable for
temperature, density or not used.
Operation: Ratiometric
Accuracy: 0.01% FS
Thermal Drift: Less than 100 ppm/C
Basic Measurement Resolution: 16 bit
Update Rate: 1 update/sec minimum
Automatic Fault detection:
Signal Over-range/under-range
Current Loop Broken
RTD short
RTD open
Fault mode to user defined default settings
Transient Protection: 500 V (Capacitive Clamp)
Reverse Polarity: No ill effects
Over-Voltage Limit (Voltage Input): 50 VDC
Available Input Ranges
Voltage: 0-10 VDC, 0-5 VDC, 1-5 VDC
Current: 4-20 mA, 0-20 mA
Resistance: 100 Ohms DIN RTD
100 Ohm DIN RTD (DIN 42-760, BS 1904):
Three Wire Lead Compensation
Internal RTD linearization learns ice point
resistance
1 mA Excitation current with reverse polarity
protection
Temperature Resolution: 0.01 C
Control Inputs
Switch Inputs are menu selectable for Start, Stop,
Reset, Lock, Inhibit, Alarm Acknowledge, Print
or Not Used.
Control Input Specifications
Input Scan Rate: 10 scans per second
Logic 1: 4 - 30 VDC
Logic 0: 0 - 0.8 VDC
Transient Suppression: 500 V fast transient
(Capacitive Clamp)
Input Impedance: 100 KΩ
Control Activation: Positive Edge or Pos. Level
based on product definition
Excitation Voltage
110/220 VAC Powered Units
Menu Selectable: 5, 12 or 24 VDC @ 100mA
24 VDC Powered Units
Menu Selectable: 5 or 12 VDC @ 100mA
12 VDC Powered Units
5 VDC @ 100mA