Allen-Bradley SLC 500 1747-L20, Installation Instructions Manual

Page: 16 / 154

16 SLC 500™ Fixed Hardware Style Controllers
Publication 1747-IN008B-MU-P
Specifications
Description Specification
Memory Type Capacitor-backed RAM memory. Battery back-up
optional.
Memory Backup Options EEPROM or UVPROM
Program Memory 1K Instruction Capacity
Battery Life 5 years
Capacitor Memory Back-Up Time
(1)
(1) For further information, refer to the Fixed Hardware Style Installation and Operation Manual, Publication
1747-6.21.
30 days at 25
°
C (77
°
F)
5 days at 60
°
C (140
°
F)
Typical Scan Time
(2)
(2) The scan times are typical for a 1K ladder logic program consisting of simple ladder logic and
communication servicing. Actual scan times depend on your program size, instructions used, and the
DH-485 communication.
8 ms/1K
Bit Execution (XIC) 4 µs
Program Scan Hold-up Time after Loss of Power 20 ms to 700 ms (dependent on loading)
Power Supply Operating Voltage ac units: 85-265V ac 47-63 Hz
dc units: 21.6-26.4V dc (24V dc
± 10%)
Power Supply Fuse Protection ac units: 120/240V ac 1.25A
dc units: 24V dc 1.6A
Power Supply Inrush Rating 30A (maximum)
Maximum Power Requirement
50 VA
(3)
(3) This specification does not include input and output values. (See page 17.)
24V dc User Power Output Current
(4)
(4) This applies only to fixed controllers that have ac line power and dc input circuits.
200 mA
24V dc User Power Output Voltage
(4)
20.4 - 27.6V dc (24V dc ± 15%)
Wire Size #14 AWG (maximum), 2 wires per terminal
I/O Electrical-Optical Isolation 1500V ac at 1 min.
1747-AIC Link Coupler Electrical-Optical
Isolation 1500V dc
Noise Immunity NEMA Standard ICS 2-230
Ambient Temperature Rating Operating: 0 ° C to +60 ° C (+32 ° F to +140 ° F)
Storage: -40 ° C to +85 ° C (-40 ° F to +185 ° F)
Humidity 5 to 95% without condensation
Vibration Displacement: 0.015 inch, peak-to-peak at 5-57
Hz
Acceleration: 2.5 Gs at 57-2000 Hz
Duration: 1 hr. per axis (x, y, z)
Agency Certification UL listed/CSA approved