Technical data

Rockwell Automation Publication 1769-TD005I-EN-P - August 2014 17
CompactLogix Controllers Specifications
Table 11 - Embedded Analog Input Specifications
Attribute 1769-L24ER-QBFC1B, 1769-L27ERM-QBFC1B
Inputs 4 channels of thermocouple/voltage/current
2 channels of RTD/Resistance inputs
Operating voltage range 2.6…30.0V DC @ 40 °C (104 °F)
2.6…26.4V DC @ 55 °C (131 °F)
2.6…5V DC @ 60 °C (140 °F)
Input types • Thermocouple: J, K, T, E, R, S, B, N and C
•Voltage
•Current
• RTD: Platinum 385, Platinum 3916, Copper 426, Nickel 672, Nickel 618,
Nickel-Iron 518
•Resistance
Input ranges
(1)
Thermocouple:
• K at 1370…1372 °C (2498…2501.6 °F)
• K at -170…1370 °C (-274…2498 °F)
• K at -200…1370 °C (-328…2498 °F)
• S and R at 0…1768 °C (32…3214.4 °F)
• S and R at -50…0 °C (-58…32 °F)
• B at 300…1820 °C (572…3308 °F)
• B at 250…300 °C (482…572 °F)
• J at -210…1200 °C (-328…2192 °F)
• T at -170…400 °C (-274…752 °F)
• T at -200…-170 °C (-328…-274 °F)
• E at -200…1000 °C (-328…1832 °F)
• N at -110…1300 °C (-166…2372 °F)
• N at -200…-110 °C (-328…-166 °F)
• C at 0…2315 °C (32…4199 °F)
Voltage:
• -50…50 mV
• -100…100 mV
• 0…5V
• 1…5V
•0…10V
• -10V…10V
Current:
•0…20 mA
•4…20 mA
RTD:
• 0…100 Ω Platinum 385
• 0…200 Ω Platinum 385
• 0…500 Ω Platinum 385
• 0…1000 Ω Platinum 385
• 0…100 Ω Platinum 3916
• 0…200 Ω Platinum 3916
• 0…500 Ω Platinum 3916
• 0…1000 Ω Platinum 3916
•0…10 Ω Copper 426
• 0…120 Ω Nickel 618
• 0…120 Ω Nickel 672
• 0…604 Ω Nickel-Iron 518
Resistance:
• 0…150 Ω
• 0…500 Ω
• 0…1000 Ω
• 0…3000 Ω
Resolution, max 15 bits plus sign (Bipolar)
16 bits (Unipolar)
Input impedance Voltage: 10 MΩ
Current: 250 Ω
Converter type Sigma-Delta
Cyclic update time 11…5000 ms dependent on user configuration
Rated working voltage 30V AC/30V DC
Common mode voltage +
10V DC per channel
Common mode rejection ratio, min 115 dB at 50 Hz at 10V
115 dB at 60 Hz at 10V
Normal mode rejection ratio, min 85 dB at 50 Hz at 1.5V
85 dB at 60 Hz at 1.5V