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Characteristics of ACE and eACE PLCs

Power
Voltage 5 – 28 VDC via a two position pluggable connector Or via USB port 4.75 – 5 VDC for the old version Read more
Current 300 mA maximum. < 100 mA typical
Less than 50 mA at 24 VDC continuously with a small programme running and no inputs/outputs connected
Digital Inputs
Type DC voltage input
Input range 3 to 30 VDC
Internal pull down to ground 10 Kohms
Input low (or 0) signal 0 to 0.8V, or open connection
Input high (or 1) signal 2.5 to 30VDC
Pulse counter input frequency up to 100 KHz (typical)
up to 250 KHz (maximum)
Program selectable debounce 0 to 255 milliseconds
Digital Outputs
Type Sinking transistor
Voltage range 3 to 30VDC
Current 300 mA maximum
Motion output pulse frequency 0 to 250 KHz (maximum)
PWM resolution / Periode 1 microsecond / 100 to 65535 microsecond Period < 1000 : One PWM output will be active Period >= 1000 : All PWM outputs are active
Off state pull up resistance to VO 33 Kohms
Analog Inputs
Type ACE v5 = 0 to 5 VDC
ACE v10 = 0 to 10 VDC
ACE c = 0 to 20 mA
Resolution 12 bit
Analog Outputs
Types Selectable ; 0-5 V, 0-10 V
Resolution 16 bit
Thermocouple / Differential Voltage Inputs
Types  Selectable ; J, K, T and N
+/- 0.256V, +/- 0.512V, +/- 1.024V, +/- 2.048V
Output value Floating point value in degrees C or F
Communications
USB Device – mini USB connector Programming, Power Supply and Modbus Slave
RS232 3 wire (TX, RX and ground). Modbus Slave
RS485 2 wire. Modbus Slave
Baud rates / parity / stop bits Baud rate selectable. 9600 bds to 115000 kbs.
Physical Dimensions
63.5 * 63.5 * 12.7 mm
Environmental
Operating temperature -40 to +85C
Humidity 0 to 95% non-condensing
MTBF: Mean Time Between Failures 4.153x 108 hours
FIT: Failures-in-Time 2.41 failures per 1E9 device-hours
Software Specifications : Application Program Limits
PLC cycle rate 5 to 1 logic scans per millisecond, depending on how big the program is.
Program Memory 34 K Word
Maximum rungs or function blocks 4 K
Maximum # Subroutines 68
Maximum Tagnames 950
Main Program data memory Bits 2,048 unsigned 8 bit integers 512 unsigned 16 bit integers 512 signed 16 bit integers 512 signed 32 bit integers 256 floating point numbers 256
Object Memory object words 4,096 object bits up to 65,536 object 8 Off integers up to 8,192 object signed 16 bit up to 4,096 object unsigned 16 bit up to 4,096 object signed 32 bit up to 2,048 object floating point up to 2,048
Maximum # objects 292
Maximum # PWM outputs all digital outputs
Maximum # of Stepper Motion Controls 3
Maximum Stepper Motion speed 250 KHz
Terminal Block Connections
Terminal type Socket connectors and Spring cage capture plug
Terminal spacing 2.50 mm
Wire section 0.10 – 0.50 mm2