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HomeProducts Controllers Zesta Controllers ZEL-2500

ZEL-2500

50mm X 26mm
Zesta ZEL-2500
Zesta ZEL-2500
The Fuzzy Logic plus PID microprocessor-based controller series, incorporates two bright, easy to read 4-digit LED  displays, indicating the process value and the set point value. The  Fuzzy  Logic  technology enables the process to reach a predetermined set point in the shortest time, with minimum overshoot during power-up or an external load disturbance.

ZEL-9300 is a 1/16 DIN size panel mount controller, ZEL-2500 is a 1/32 DIN size panel mount controller, ZEL-8300 is a 1/8 DIN size panel mount controller, and the ZEL-4300 is a 1/4 DIN size panel mount controller. These units are powered by 11-26 VDC or 90-250 VAC supply, a control relay output is standard. Alternative output options include triac, 5 V logic output, linear current or linear voltage. The units are fully programmable for PT100 DIN as well as thermocouple types J, K, T, E, B, R, S, N and L. The input signal is digitized by using an 18-bit A to D converter. The fast sampling rate allows the unit to control rapidly changing processes.

Digital communications such as RS-485 or RS-232 are available as an additional option. The digital communication feature allows the units to be interfaced with supervisory control systems and software.A programming port is available for automatic configuration, calibration and testing without the need to access the control via the front keypad directly.By using proprietary Fuzzy modified PID technology, the control loop will minimize the overshoot and undershoot in the shortest time. The following diagram is a comparison of results with and without Fuzzy technology.
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Features
Specifications
Ordering information
Resources
Applications

Product Features

  • High accuracy 18-bit input A-D
  • High accuracy 15-bit output D-A
  • Fast input sampling rate (5 times/sec)
  • Basic and full function
  • User programmable menu
  • Pump control
  • Fuzzy + PID microprocessor-based control
  • Automatic programming
  • Differential control
  • Auto-tune function
  • Self-tune function
  • Sleep mode self-tune function
  • Soft-start ramp and dwell timer
  • Programmable inputs (thermocouple, RTD, mA & VDC)
  • Analog input for remote set point and CT
  • Event input for changing functions & set point
  • Programmable digital filter
  • Hardware lockout + remote lockout protection
  • Loop break alarm
  • Heater break alarm
  • Sensor break alarm + Bumpless transfer
  • RS-485 or RS-232 communication
  • Analog retransmission
  • Signal conditioner DC power supply
  • A wide variety of output modules available
  • Safety UL/CSA/IEC1010-1
  • EMC/CE EN61326

Product Specifications

Power:
  • 90-264 VAC, 47-63 Hz, 15 VA, 7 W maximum
  • 11-26 VAC / VDC, 15 VA, 7 W maximum
Input 1:
  • Resolution: 18-bits
  • Sampling Rate: 5 times / second
  • Maximum Rating:-2 VDC minimum, 12 VDC maximum (1 minute for mA input)
  • Temperature Effect:+/- 1.5 uV/°C for all inputs except mA input +/- 3.0 uV/°C for mA input
  • Sensor Break Detection: Sensor open for TC, RTD and mV inputs, below 1 mA for 4-20 mA input, below 0.25 V for 1 - 5 V input, unavailable for other inputs.
Input 2:
  • Resolution: 18-bits
  • Sampling Rate : 1.66 times / second
  • Maximum Rating:-2 VDC minimum, 12 VDC maximum
  • Temperature Effect: +/- 1.5 uV/°C for all inputs except mA input +/- 3.0 uV/°C for mA input
  • Common Mode Rejection Ratio (CMRR): 120 dB
  • Normal Mode Rejection Ratio (NMRR): 55 dB
  • Sensor Break Detection: Below 1 mA for 4-20 mA input, below 0.25 V for 1 - 5 V input, unavailable for other inputs.
  • Sensor Break Responding Time : 0.5 second
Input 3 (Event Input):
  • Logic Low: -10 V minimum, 0.8 V maximum
  • Logic High: 2 V minimum, 10 V maximum
  • External pull-down Resistance: 400 K maximum
  • External pull-up Resistance: 1.5 M minimum
  • Functions: Select a second set point or PID, reset alarm 1 or alarm 2 or (reset alarms 1 and 2), disable output 1 or output 2 or (disable outputs 1 and 2) and remote lockout.
Output 1/Output 2:
  • Relay Rating: 2 A/240 VAC, 200,00 cycles for resistive load
  • Pulsed Voltage: Source Voltage 5 V, current limiting resistance 66Ω
  • Linear Output Characteristics: 4-20mA, 0-20mA, 0-5V, 1-5V, 0-10V
Linear Output:
  • Resolution: 15-bits
  • Output Regulation: 0.01% for full load change
  • Output Setting Time: 0.1 sec. (stable to 99.9%)
  • Isolation Breakdown Voltage: 1000 VAC
  • Temperature Effect: +/- 0.0025% of SPAN /0°C
Triac (SSR) Output:
  • Rating: 1 A / 240 VAC
  • Inrush Current: 20 A for 1 cycle
  • Min. Load Current: 50 mA rms
  • Max. Off-state Leakage: 3 mA rms
  • Max. On-state Voltage:1.5 V rms
  • Insulation Resistance:1000 M ohms min. at (500 VDC)
  • Dielectric Strength: 2500 VAC for 1 minute
Alarm 1/Alarm 2 (Output ZEL-2500 & ZEL-9300 only):
  • Alarm 1 Relay: Form A or Form B for ZEL-9300, Form C for ZEL-4300, ZEL-8300, 5 V Logic output for ZEL-2500 Max. rating 2 A/240 VAC, 200,000 cycles for resistive load.
  • Alarm 2 Relay: Form A Max. rating 2 A/240 VAC,200,000 cycles for resistive load.
  • Alarm Functions: Dwell timer, Deviation High / Low Alarm, Deviation Band High / Low Alarm, PV1 High / Low Alarm, PV2 High / Low Alarm, PV1 or PV2 High / Low Alarm, PV1-PV2 High / Low Alarm, Loop Break Alarm, Sensor Break Alarm.
  • Alarm Mode: Normal, Latching, Hold, Latching / Hold.
  • Dwell Timer: 0 - 6553.5 minutes
Data Communication:
  • Interface: RS-232 (1 unit), RS-485 (up to 247 units)
  • Protocol: Modbus Protocol RTU mode
  • Address: 1-247
  • Baud Rate: 0.3 ~ 38.4 K bits/sec
  • Data Bits: 7 or 8 bits
  • Parity Bit: None, Even, or Odd
  • Stop Bit: 1 or 2 bits
  • Communication Buffer: 50 bytes
Analog Retransmission:
  • Functions: PV1, PV2, PV1-PV2, PV2-PV1, Set Point, MV1, MV2, PV-SV deviation value
  • Output Signal: 4-20 mA, 0-20 mA, 0-1 V, 0-5 V,1-5 V, 0-10 V
  • Resolution: 15-bits
  • Accuracy: +/-0.05% of span +/-0.0025%/°C
  • Load Resistance: 0-500 ohms (for current output) 10 K ohms minimum (for voltage output)
  • Output Regulation: 0.01% for full load change
  • Output Settling Time: 0.1 sec (stable to 99.9%)
  • Isolation Breakdown Voltage: 1000 VAC min.
  • Integral Linearity Error: +/-0.005% of span
  • Temperature Effect: +/-0.0025% of span/°C
  • Saturation Low: 0 mA (or 0 V)
  • Saturation High: 22.2 mA (or 5.55 V, 11.1 Vmin.)
  • Linear Output Range: 0-22.2 mA (0-20 mA or 4-20 mA),0-5.55 V (0-5 V, or 1-5 V),0-11.1 V (0-10 V)
User Interface:
  • Dual 4-digit LED Displays:
  • ZEL-4300: Upper 0.55” (14 mm), Lower 0.4” (10 mm)
  • ZEL-8300, ZEL-9300: Upper 0.4” (10 mm) Lower 0.31” (8 mm)
  • ZEL-2500: (Single) 0.4” (10 mm)
  • Keypad: 4 keys
  • Programming Port: For automatic setup, calibration and testing
  • Communication Port: Connection to PC for supervisory control
Control Mode:
  • Output 1: Reverse (heating) or direct (cooling) action
  • Output 2: PID cooling control, cooling P band 1 ~ 255% of PB
  • ON-OFF: 0.1 - 100.0 (°F) hysteresis control (P band = 0)
  • P or PD: 0 - 100.0% offset adjustment
  • PID: Fuzzy logic modified, Proportional band 0.1 ~ 900.0°F, Intergral time 0 - 1000 sec., Derivative time 0 - 360.0 sec.
  • Cycle Time: 0.1 - 100.0 seconds
  • Manual Control: Heat (MV1) and Cool (MV2)
  • Auto-tune: Cold start and warm start
  • Self-tuning: Select None and Yes
  • Failure Mode: Auto-transfer to manual mode when sensor breaks or A-D converter damage
  • Sleep Mode: Enable or Disable
  • Ramping Control: 0 ~ 900.0°F/min. or 0 - 900.0°F/hour ramp rate
  • Power Limit: 0 - 100% output 1 and output 2
  • Pump/Pressure Control: Sophisticated functions provided
  • Remote Set Point: Programmable range for voltage or current input
  • Differential Control: Control PV1-PV2 at set point
Digital Filter:
  • Function: PV Dampening
  • Time Constant: 0, 0.2, 0.5, 1, 2, 5, 10, 20, 30, 60 seconds programmable
Enviromental:
  • Operating Temperature: -10°C to 50°C
  • Storage Temperature: -40°C to 60°C
  • Humidity: 0 to 90% RH (non-condensing)
  • Insulation Resistance: 20 M ohms minimum (at 500 VDC)
  • Dielectric Strength: 2000 VAC, 50/60 Hz for 1 minute
  • Vibration Resistance: 10 - 55 Hz, 10 m/s2 for 2 hours
  • Shock Resistance: 200 m/s2 (20 g)
  • Molding: Flame retardant polycarbonate
Dimensions:
  • ZEL-4300 ---96 mm(W) X 96 mm(H) X 66 mm(D), 53 mm depth behind panel
  • ZEL-8300 ---48 mm(W) X 96 mm(H) X 80 mm(D), 65 mm depth behind panel
  • ZEL-9300 ---50.7 mm(W) X 50.7 mm(H) X 88.5 mm(D), 75 mm depth behind panel
  • ZEL-2500 ---50 mm(W) X 26.5 mm(H) X 110.5 mm(D), 98 mm depth behind panel
Approval Standards:
  • Safety: UL873 (11th edition, 1994) CSA C22.2 No. 24-93 EN61010-1 (IEC1010-1)
  • Protective Class: ZEL-8300, ZEL-4300: IP20 housing & terminals with protective covers.
  • ZEL-2500, ZEL-9300: NEMA 4 X & (IP65) front panel, IP20 housing and terminals.All indoor use.
  • EMC: EN61326