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ZEL-L Series Limit Controller

ZEL-L62, L22

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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ZEL-L Series Limit Controller

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