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HomeProducts Controllers Zesta Controllers ZEL-8100

ZEL-8100

48mm X 96mm
Zesta ZEL-8100
Zesta ZEL-8100
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.

The ZEL-9100 is a 1/16 DIN size panel mount controller. The ZEL-4100 is a 1/4 DIN size panel mount controller while the ZEL-8100 is a 1/8 DIN size panel mount controller. These units may be powered by 11-26 VAC/VDC or 90-250 VAC supply. The base model incorporates a 2-amp control relay output as a standard. The second output may be configured as a cooling control, or as an alarm. Both outputs can be ordered with an AC triac, 5VDC logic, linear current or linear voltage to drive an external device such as an SSR. There are six types of alarms, plus  a  dwell  timer  that  may  be  configured  for a third output (relay  form  C  only). The units are fully programmable for PT100 DIN & JIS RTDs as well as thermocouple types J, K, T, E, B, R, S, N, and L. In addition, the control accepts linear current and voltage inputs. The input signal is digitized using an 18-bit A to D converter. The high-speed sampling rate of the A to D converter allows precise control of rapidly changing processes.

Digital communications such as RS-485 or RS-232 are available as an additional option for models ZEL-9100, ZEL-8100 and ZEL-4100 controllers. 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.

 
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Features
Specifications
Ordering information
Resources
Applications

Product Features

  • Easy-to-use
  • Fuzzy modified PID heat & cool control
  • Fast A-D sampling rate (5 times/sec)
  • Universal input (PT100, thermocouple, current & voltage) with high accuracy 18-bit A-D
  • Analog output (linear current or voltage)
  • uses high accuracy 18-bit D-A
  • RS-485 RS-232 interface
  • Programming port provided on board
  • Supports manual control & auto-tune function
  • Wide variety of programmable alarm modes
  • Operator lockout protection
  • Bumpless transfer feature
  • Soft-start ramp and dwell timer
  • Bright display stabilized with digital filter
  • SEL feature allows operator to rearrange the user menu
  • UL/CSA/CE approval
  • High performance with low cost

Product Specifications

Power:
  • 90-250 VAC, 47-63 Hz, 12 VA, 5 W maximum
  • 11-26 VAC / VDC, 12 VA, 5 W maximum
Signal Input:
  • 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/ºC for all inputs except mA input +/- 3.0 uV/ºC for mA input
  • Sensor Break Detection: Sensor open for TC, RTD and mV inputs, Sensor short for RTD input, below 1mA for 4-20 mA input, below 0.25 V for 1 - 5 V input, unavailable for other inputs.
Output 1 / Output 2:
  • Relay Rating: 2 A/240 VAC, 200,000 cycles for resistive load.
  • Pulsed Voltage: Source Voltage 5 V, current limiting resistance 66 Ω
  • Linear Output Characteristics: 4-20mA, 0-20mA, 05-V, 1-5V, 0-10V
Triac (SSR) Output:
Rating: 1 A / 240 VAC
Alarm:
  • Alarm Relay: Form C, 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, Process High / Low Alarm.
  • Alarm Mode: Normal, Latching, Hold, Latching / Hold.
  • Dwell Timer: 0.1 - 4553.6 minutes.
Data Communication:
  • Interface: RS-232 ( 1 unit ), RS-485 ( up to 247 units )
  • Protocol : Modbus Protocol RTU mode
Analog Retransmission:
  • Output Signal: 4-20 mA, 0-20 mA, 0-5 V, 1-5 V, 0-10 V
  • Resolution: 15 bits
  • Accuracy: +/-0.05% of span +/-0.0025%/ºC
  • Load Resistance: 0-500 ohms (for current output) 10 K ohms minimum (for voltage output)
  • Output Regulation: 0.01% for full load change
User Interface:
  • 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 50 ~ 300% of PB, dead band -36.0~36.0% of PB
  • ON-OFF: 0.1 - 90.0 (ºF ) hysteresis control ( P band = 0 )
  • P or PD: 0 - 100.0 % offset adjustment
  • PID: Fuzzy logic modified
  • Proportional band 0.1 ~ 900.0ºF.
  • Intergral time 0 - 1000 seconds
  • Derivative time 0 - 360.0 seconds
  • Cycle Time: 0.1 - 90.0 seconds
  • Manual Control: Heat (MV1) and cool (MV2)
  • Auto-tuning: Cold start and warm start
  • Failure Mode: Auto-transfer to manual mode when sensor breaks or A-D converter damage
  • Ramping Control : 0 - 900.0ºF/minute or 0 - 900.0ºF/hour ramp rate
Digital Filter:
  • Function: PV dampening
  • Time Constant: 0, 0.2, 0.5, 1, 2, 5, 10, 20, 30, 60 seconds programmable
Environmental :
  • Operating Temperature: -10ºC to 50ºC
  • Storage Temperature: -40ºC to 60ºC
  • Humidity: 0 to 90 % RH (non-condensing)
  • Altitude: 2000 m maximum
  • Pollution: Degree 2
  • Insulation Resistance: 20 M ohms min. ( 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-4100 ---96 mm(W) X 96 mm(H) X 65 mm(D), 53 mm depth behind panel
  • ZEL-7100 ---72 mm(W) X 72 mm(H) X 78.2 mm(D), 65 mm depth behind panel
  • ZEL-8100 ---48 mm(W) X 96 mm(H) X 80 mm(D), 65 mm depth behind panel
  • ZEL-9100 ---48 mm(W) X 48 mm(H) X 116 mm(D),105 mm depth behind panel
Approval Standards:
  • Safety: UL61010C-1 CSA C22.2 No. 24-93 EN61010-1 (IEC1010-1 )
  • Protective Class: IP65 front panel with additional option, IP50 front panel without additional option, all indoor use, IP20 housing & terminals with protective cover.
  • EMC: EN61326