| Product Name: |
48 x 48 mm limit controller |
| Description: |
The limit control LIMITROL L91 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.
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| Specification: |
Power
90 - 264 VAC, 49 - 63 Hz, 10VA, 5W maximum
11 - 26 VAC / VDC, SELV, Limited Energy, 10VA, 5W maximum
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/ °C
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
Burn-out Current : 200nA
Common Mode Rejection Ratio ( CMRR ) : 120dB
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 ~ 1820 °C
(32 ~ 3308 °F) |
±2 °C
(200°C - 1820°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% |
510KΩ |
Event Input
Logic Low: Logic -10V minimum, 0.8V maximum.
Logic High: 2V minimum, 10V maximum.
Functions: Remote reset, remote lockout.
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 : 1.5 V rms
Insulation Resistance : 1000 Mohms min. at 500 VDC
Dielectric Strength : 2500 VAC for 1 minute
DC Voltage Supply Characteristics ( Installed at Output 2 )
Type |
Tolerance |
Max. Output Current |
Ripple Voltage |
Isolation Barrier |
20V |
±1 V |
25 mA |
0.2 Vp-p |
500 VAC |
12V |
±0.6 V |
40 mA |
0.1 Vp-p |
500 VAC |
5V |
±0.25 V |
80 mA |
0.05 Vp-p |
500 VAC |
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 Kbits/sec
Data Bits : 8 bits
Parity Bit : None, Even or Odd
Stop Bit : 1 or 2 bits
Communication Buffer : 50 bytes
User Interface
4-digit LED Displays : 0.4" (10mm),
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 to 50°C
Storage Temperature : -40°C to 60°C
Humidity : 0 to 90 % RH ( non-condensing )
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 : 48mm(W) X 48mm(H) X 94mm(D), 86 mm depth behind panel
Weight : 150 grams
Approval Standards
Safety : FM Class 3545 (Oct. 1998), UL873 ( 11'th edition, 1994 ) , CSA C22.2
No. 24-93 , EN61010-1 (IEC1010-1)
Protective Class :
IP30 front panel,
indoor use,
IP20 housing and
terminals ( with protective cover)
EMC : EN61326
|
| Other Description: |
L91 - □□□□
1 2 3 4
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
RTD: PT100 DIN, PT100 JIS
mV:
0 - 60mV
2: Voltage 0-1 V
3: Voltage 0-10 V
4:
Current 0-20 mA
9:
Special Order
3 Output 1
0: None
1:
Form C 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/25mA DC Output Power Supply
8:
Isolated 12V/40mA DC Output Power Supply
9:
Isolated 5V/80mA DC Output Power Supply
A:
RS-485
B:
Event input
C:
Pulsed voltage to drive SSR, 14V/40mA
D:
Retransmit 4-20mA / 0-20mA
E:
Retransmit 1-5V / 0-5V
F:
Retransmit 0-10V
H:
Special order
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| This is the specification for L91, 48 x 48 mm limit controller which includes model, name, description and specification for L91, 48 x 48 mm limit controller. Related Keywords : limit controller |
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