Safety Limit Controllers
Safety Limit Controllers
L41
Product Description

96x96mm

Safety Limit Controllers
0.00

The limit control L41 is an over temperature or a high limit safety device with a latching output that could remove the power while the process is in abnormal condition, for example the process higher than high limit set point or lower than the low limit set point.

 UL CSA
Power 
90 - 250 VAC, 47 - 63 Hz, 10VA, 5W maximum
11 - 26 VAC / VDC, SELV, Limited Energy, 10VA, 5W maximum
Signal InputCharacteristics 
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 Lead Resistance Effect T/C: 0.2uV/ohm
3-wire RTD: 2.6 °C/ohm of resistance difference of two leads
2-wire RTD: 2.6 °C/ohm of resistance sum of two leads 200nA
Common Mode Rejection Ratio ( CMRR )  120dB
Normal Mode Rejection Ratio ( NMRR )  55dB
Sensor Break Detection Sensor open for TC, RTD and mV inputs,
below 1 mA for 4-20 mA input,
below 0.25V for 1 - 5 V input, unavailable for other inputs.
Sensor Break Responding Time Within 4 seconds for TC, RTD and mV inputs,
0.1 second for 4-20 mA and 1 - 5 V inputs.
Characteristics
Type Range  Accuracy@ 25 °C Input Impedance
J -120 ~ 1000 °C (-184 ~ 1832 °F) ±2 °C 2.2MΩ
K -200 ~ 1370 °C (-328 ~ 2498°F) ±2 °C 2.2MΩ
T -250 ~ 400°C (-418 ~ 752°F) ±2 °C 2.2MΩ
E -100 ~ 900 °C (-148 ~ 1652 °F) ±2 °C 2.2MΩ
B 0 ~ 1800 °C (32 ~ 3272 °F) ±2 °C (200°C - 1800°C) 2.2MΩ
R 0 ~ 1767.8 °C (32 ~ 3214 °F) ±2 °C 2.2MΩ
S 0 ~ 1767.8 °C (32 ~ 3214 °F) ±2 °C 2.2MΩ
N -250 ~ 1300 °C (-418 ~ 2372 °F) ±2 °C 2.2MΩ
L -200 ~ 900 °C (-328 ~ 1652 °F) ±2 °C 2.2MΩ
PT100 (DIN) -210 ~ 700 °C (-346 ~ 1292 °F) ±0.4°C 1.3KΩ
PT100 (JIS) -200 ~ 600 °C (-328 ~ 1112 °F) ±0.4°C 1.3KΩ
mV -8 ~ 70mV ±0.05% 2.2MΩ
mA -3 ~ 27mA ±0.05% 70.5Ω
V -1.3 ~ 11.5V ±0.05% 650KΩ
Input 2
Resolution 18 bits
Sampling Rate 1.66 times / second
Maximum Rating -2 VDC minimum, 12 VDC maximum
Emperature Effect ±1.5uV/ °C for all inputs except mA
input ±3.0uV/ °C for mA input
Common Mode Rejection Ratio ( CMRR ) 120dB
Normal Mode Rejection Ratio ( NMRR )  55dB
Sensor Break Detection Below 1 mA for 4-20 mA input,
below 0.25V for 1 - 5V input,
unavailable for other inputs.
Sensor Break Responding Time 0.5 second


Output 1 / Output 2 
Relay Rating 2A/240 VAC, life cycles 200,000 for resistive load
Pulsed Voltage Source Voltage 5V, current limiting resistance 66Ω
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
Alarm 2
Alarm Relay Form C,Max. rating 2A/240VAC, life cycles 200,000 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
Address 1 - 247
Baud Rate 2.4 ~ 38.4 Kbits/sec
Data Bits 7 or 8 bits
Parity Bit None, Even or Odd
Stop Bit 1 or 2 bits
Communication Buffer 160 bytes
Analog Retransmission 
Output Signal 4-20 mA, 0-20 mA, 0-1V, 0-5V, 1-5V, 0-10V
Resolution 15 bits
Accuracy ±0.05 % of span ±0.0025 %/ °C
Load Resistance 0 - 500 ohms ( for current output ),10 K ohm minimum ( for voltage output )
Output Regulation  0.01 % for full load change
User InterfaceDual 4-digit LED Displays
Keypad 4 keys
Programming Port For automatic setup, calibration and testing
Communication Port  Connection to PC for supervisory control
Limit Control
High Limit, Low Limit and High/Low Limit programmable
 
Digital Filter 
Function First order
Time Constant  0, 0.2, 0.5, 1, 2, 5, 10, 20, 30, 60 seconds programmable
Environmental & Physical 
Operating Temperature -10°C ~ 50°C
Storage Temperature -40°C ~ 60°C
Humidity 0 to 90 % RH ( non-condensing )
Altitude 2000m maximum
Pollution Degree 2
Insulation Resistance 20 Mohms 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 )
Moldings Flame retardant polycarbonate
Dimensions 96mm(W) X 96mm(H) X 65mm(D), 53 mm depth behind panel
Mounting panel mount, cutout 92 X 92 ( mm )
Weight  250 grams
Event Input
Logic Low Logic -10V minimum, 0.8V maximum.
Logic High 2V minimum, 10V maximum.
Functions Remote reset, remote lockout.
Approval Standards
Safety UL 61010C-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,
IP 20 housing and terminals with protective cover.
EMC EN61326
Documentation
Catalogue L41 L91 catalogue(1.419 MB / 8pages ) Download
User Manual UM0L411B (990 KB / 70pages ) Download
Software&Firmware
BC-Set Software - BC-SET v2.0(6.9MB) Download
BC-Set Software - BC-SET Pro(133MB) Download

 
*BC-SET Pro Compatible models:

Limit controller
L41 Version above V15
L91 Version above V22
L62, L22, L42 Version above V01

Plastic/rubber industry

It is installed on the heating material tube of the injection molding machine to control the temperature of the raw material, effectively control the liquid temperature of the plastic and improve the molding quality of the product.
Installed on the hot runner system for temperature control of runners and gates to stabilize the quality of the plastic.
Temperature control on the mold temperature machine, indirectly adjusting the temperature of the mold by adjusting the temperature of the hot fluid, can improve the production efficiency of the product and reduce the generation of defective products.

Electric heating furnace industry

Vacuum furnace equipment / vacuum melting / vacuum heat treatment

A new algorithm for PID adjustment using fuzzy rules is used to adjust the PID algorithm to eliminate the PID saturation integral phenomenon when the error is large. When the error is small, the improved PID algorithm is used for adjustment and can be automatically adjusted. Learn and memorize some of the characteristics of the controlled object to optimize the effect

Semiconductor industry

The temperature control of the electric heating cloth package is often used for the heating of the exhaust pipe valve parts of the semiconductor factory, the panel factory, or the special steel cylinder.

In the semiconductor temperature process control program, the heating system of the chamber, such as the decane process, the dichloromethane process

Ceramic / kiln / glass industry

Ceramic sintering furnace:

The heating process on the sintering furnace controls the heating rate to obtain a finished product with better quality and stability.

Electric kiln:

Temperature adjustment during kiln firing to obtain a finished product with better quality and stability.

Fiber machinery

Dyeing machine:

control the temperature during dyeing to a suitable range, which in turn reduces chromatic aberration and improves the quality of dyed products.

Fiber dryer:

The temperature during drying is controlled within a suitable range to improve the fiber product.

other

Temperature Controller

Constant temperature and humidity machine
Heating/cooling air conditioning
Pool/bathroom temperature control facility

1 2 3 4 5 6 7 8
1 Power Input 4: 90 - 264 VAC, 47-63 HZ
5: 11 - 26 VAC or VDC, SELV, Limited Energy
2 Signal Input 1: Standard Input
    Thermocouple: J, K, T, E, B, R, S, N, L, C, P
    RTD: PT100 DIN, PT100 JIS 
2: Voltage 0-1 V
3: Voltage 0-10 V
4: Current 0-20 mA
5: Voltage : 0-5 V
9: Special Order
3 Output 1 0: None
1: Relay rated 2A / 240VAC
2: Pulsed voltage to drive SSR, 5V / 30mA
6: Triac output 1A / 240VAC,SSR
C: Pulsed voltage to drive SSR, 14V/40mA
9: Special order
4 Output 2 0: None
1: Form A relay 2A / 240VAC
2: Pulsed voltage to drive SSR, 5V / 30mA
6: Triac output, 1A / 240VAC, SSR
7: Isolated 20V / 25 mA DC Output Power Supply
8: Isolated 12V / 40 mA DC Output Power Supply
9: Isolated 5V / 80 mA DC Output Power Supply
C: Pulsed voltage to drive SSR, 14V/40mA
H: Special order
5 Communications 0: None
1: RS-485 interface
2: RS-232 interface
3: Retransmit 4 - 20 mA / 0 - 20 mA
4: Retransmit 1 - 5V / 0 - 5V
5: Retransmit 0 - 10V
9: Special order
6 Options 0: IP50 standard, non UL certified
1: IP65 water resistant rubber installed, non UL certified
2: IPx0 UL certified
7 , 8   Standard leave blank Special Order AA-ZZ  

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