ZEL-L Series Limit Controller

ZEL-L62, L22
ZEL-L62
ZEL-L62
The ZEL-L22, ZEL-L62 & ZEL-L42 are FM approved limit controllers that can be configured either as a high limit or as a low limit controller by the user.

These limit controllers are powered by an 11-26 or 90-250 VDC / VAC supply, incorporating a 2 Amp relay output as a standard. The second output can be used as an alarm. Both outputs can be selected as a 5VDC or 14VDC logic output to drive an external device. The limit controllers can be incorporated with two event inputs, up to 3 alarm outputs, RS-485
communication, retransmission voltage or current output optionally.

The limit controllers are fully programmable for linear current, linear voltage, Pt100 and thermocouple types J, K, T, E, B, R, S, N, L, U, P, C, and D. The input signal is digitized by using an 18-bit A to D converter. Its fast-sampling rate allows the limit controller to protect fast processes.
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Product Features

  • LCD display
  • High accuracy 18 Bit A-D Conversion
  • and 15 Bit D-A Conversion
  • Fastest sampling rate of 200 msec
  • Universal input
  • Up to 2 event inputs
  • Remote reset
  • Remote lock
  • RS-485 communication
  • Lockout protection
  • Bidirectional menu navigation
  • On-field calibration
  • °C / °F temperature measurements
  • DIN rail mount option
  • Configurable display logic -SAFE

Product Specifications

Power:
  • 90 to 250VAC, 47 to63Hz,
  • 20 to 28 VAC,47-63Hz / 11 to 40 VDC
Power Consumption:
  • ZEL-L22: 8VA,4W maximum
  • ZEL-L62: 10VA, 5W maximum
  • ZEL-L42: 12VA,6W maximum
Signal Input:
  • Thermocouple (J, K, T, E, B, R, S, N, L, U, P, C, D)
  • RTD(Pt100(DIN), Pt100(JIS))
  • Current(mA)
  • Voltage (V, mV)
  • Resolution: 18 Bits
  • Sampling Rate: 5 Times / Second (200msec)
  • Maximum Rating: -2VDC minimum, 12VDC maximum
  • Temperature Effect: 1.5μV /°C for all inputs except mA input, 3.0μV /°C for mA
  • Sensor Lead Resistance Effect: Thermocouple: 0.2 μV / Ω; 3-wire RTD: 2.6°C /Ω of difference of resistance of two leads 2-wire RTD: 2.6°C /Ω of sum of resistance of two leads
  • Burn-out Current: 200 nA
  • CMRR: 120 dB
  • NMRR: 55 dB
  • Sensor Break Detection: Sensor open for Thermocouple, RTD and mV inputs, Sensor short for RTD input,
  • Below 1mA for 4-20mA input, Below 0.25VDC for 1 - 5VDC input, Not available for other inputs.
  • Sensor Break Response Time: Within 4 seconds for Thermocouple, RTD and mV inputs, 0.1 second for 4-20mA and 1 - 5VDC inputs.
Digital Filter:
  • Function: First Order
  • Time Constant: 0, 0.2, 0.5, 1, 2, 5, 10, 20, 30, 60 Seconds, Programmable
Event Input:
  • Number of Event Inputs: ZEL-L22 (1); ZEL-L62 (2); ZEL-L42 (3)
  • Logic Low: -10VDC minimum, 0.8VDC maximum.
  • Logic High: 2VDC minimum, 10VDC maximum
  • Functions: Remote lock, Remote reset output1, HSP2, LSP2, HLS2, HSP3, LSP3, HLS3, Reset alarm1, Reset alarm2, Reset alarm 3, Reset all alarms, Cancel latch, Reset reference data
Output 1 / Output 2:
  • Limit Control Function: High Limit, Low Limit and High / Low Limit
  • Type: Relay, Pulsed Voltage
  • Relay Type: Form A
  • Relay Rating: 2A, 240V AC, 200000 Life cycles for resistive load
  • Pulsed Voltage: Source voltage 5VDC, Current limiting resistance 66Ω
  • Temperature Effect: ±0.01% of Span/ °C
Alarm:
  • Relay Type: Form A
  • Maximum Rating: 2A, 240VAC, 200000 Life cycles for resistive load
  • Alarm Functions: Process High, Process Low
  • Alarm Mode: Latching, normal, Latching reverse, Normal reverse
Triac (SSR) Output:
  • Rating: 1A / 240 VAC
  • Inrush Current: 20A for 1 cycle
  • Min. Load Current: 50 mA rms
  • Max. Off-state Leakage: 3 mA rms
  • Max. On-state Voltage: 1.5V rms
  • Insulation Resistance: 1000 Mohms min. at 500 VDC
  • Dielectric Strength: 2500 VAC for 1 minute
Data Communications:
  • Interface: RS-485
  • Protocol: Modbus RTU (Slave mode)
  • Address: 1 to 247
  • Baud Rate: 2.8KBPS to 115.2KBPS
  • Parity Bit: None, Even or Odd
  • Stop Bit: 1 or 2 Bits
  • Data Length: 7 or 8 Bits
  • Communication Buffer: 160 Bytes
Analog Retransmission:
  • Output Signal: 4-20mA, 0-20 mA, 0 - 10VDC
  • Resolution: 15 Bits
  • Accuracy: ±0.05% of Span ± 0.0025% / °C
  • Load Resistance: 0 to 500Ω for current output, 10KΩ minimum for voltage output
  • Output Regulation: 0.01% for full load change
  • Output Setting Time: 0.1Second (stable to 99.9%)
  • Isolation Breakdown: 1000VAC min
  • Integral Linearity Error: ±0.005% of span
  • Temperature Effect: ±0.0025% of span /°C
  • Saturation Low: 0mA or 0VDC
  • Saturation High: 22.2mA or 5.55V,11.1V min
  • Linear Output Ranges: 0-22.2mA (0-20mA/4-20mA), 0-5.55VDC (0-5VDC, 1-5VDC), 0-11.1VDC (0 - 10VDC)
User Interface:
  • Keypad: 4 Keys
  • Display Type: 4 Digit LCD display
  • No of Display: 2
  • Upper Display Size: ZEL-L22: 0.31” (8mm); ZEL-L62: 0.58” (15mm); ZEL-L42: 0.98” (25mm)
  • Lower Display Size: ZEL-L22: 0.25” (6.5mm): ZEL-L62: 0.3” (7.8mm): ZEL-L42: 0.55” (14mm)
Programming Port:
  • Interface: Micro USB
  • PC Communication Function: Firmware upgrade
Limit Control:
High Limit, Low Limit and High/Low Limit programmable
Environmental & Physical:
  • Operating Temperature: -10°C to 50°C
  • Storage Temperature: -40°C to 60°C
  • Humidity: 0 to 90 % RH (Non-Condensing)
  • Altitude: 2000 Meters maximum
  • Pollution: Degree II
  • Insulation Resistance: 20MΩ minimum (@500V DC)
  • Dielectric Strength: 2000VAC, 50/60 Hz for 1 minute
  • Vibration Resistance: 10 to 55 Hz, 10m/s2 for 2 hours
  • Shock Resistance: 200 m/s2(20g)
  • Housing: Flame retardant polycarbonate
  • Mounting: ZEL-L22: DIN-Rail; ZEL-L62: Panel; ZEL-L42: Panel
  • DIN Size: ZEL-L22: - ; ZEL-L62: 1/16 DIN; ZEL-L42: 1/4 DIN
  • Dimensions (WxHxD)(mm): ZEL-L22 (22.5x96x83); ZEL-L62 (48x48x59); ZEL-L42 (96x96x59)
  • Depth Behind Panel (mm): ZEL-L22 (-); ZEL-L62 (50); ZEL-L42 (50)
  • Cut Out Dimensions (mm): ZEL-L22 (-); ZEL-L62 (45x45); ZEL-L42 (92x92)
  • Weight (grams): ZEL-L22 (160g); ZEL-L62 (160g); ZEL-L42 (290g)
Approval Standards:
  • Safety: FM Class 3545, UL61010-1, CSA 22.2 No.61010-1-12, EN61010-1 (IEC1010-1), ROHS, REACH
  • Protective Class: IP50 for the front panel, IP20 for rear terminals and housing. All indoor use.
  • EMC: EN61326

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