BMEAHO0412 and BMEAHO0412C Specifications
Original instructions
About us
Ruggedized Version of the Module
The BMEAHO0412C (coated) equipment is a ruggedized version of the BMEAHO0412 (standard) equipment. It can be used at standard temperatures -25...60 ºC (-13...140 ºF) and in harsh chemical environments.
The BMEAHO0412C equipment has the same performance characteristics as the standard BMEAHO0412 equipment.
If this equipment is operated outside the -25...60 ºC (-13...140 ºF) temperature range, the equipment can operate abnormally.
CAUTION
UNINTENDED EQUIPMENT OPERATION
Do not operate this equipment outside of its specified temperature range.
Failure to follow these instructions can result in injury or equipment damage.
For more information, refer to chapter Installation in More Severe Environments.
Altitude Operating Conditions
The characteristics in the tables below apply to the modules BMEAHO0412 and BMEAHO0412C for use at altitude up to 2000 m (6560 ft). When the modules operate above 2000 m (6560 ft), apply additional derating.
For detailed information, refer to chapter Operating and Storage Conditions.
General Module Specifications
The eX80 HART analog output BMEAHO0412 and BMEAHO0412C modules possess the following general characteristics:
Head module compatibility
  • Local rack: BME P58 x0x0 CPU
  • Remote I/O drop: BME CRA 312 10 adapter
Isolation:
–
  • between channels
1000 Vdc (1 minute duration)
  • between channels and bus
1400 Vdc (1 minute duration)
  • between channels and ground
1400 Vdc (1 minute duration)
Operating ambient temperature
BMEAHO0412: 0...60° C (32...140 °F) BMEAHO0412C: -25...60° C (-13...140 °F)
Vibration
10 mm / 3 g / x10 (per IEC60068-2-6)
Shock
30  g / 11 ms / x3 (per IEC60068-2-27)
Power consumption (3.3 V)
380 mA
Power consumption (24 V)
137 mA
Field device support
2-wire / 4-wire
Hot-swap support?
Yes
Analog Specifications
The eX80 HART analog output BMEAHO0412 and BMEAHO0412C modules possess the following analog characteristics:
Number of channels
4
Type of outputs
Current configured by software
Nominal range (full scale)
4-20 mA
Maximum conversion range
0...21 mA
Measurement accuracy for BMEAHO0412 module:
–
  • Accuracy at 25 °C
0.1% of full scale
  • Accuracy at 0...60 °C
0.2% of full scale
Measurement accuracy for BMEAHO0412C module:
–
  • Accuracy at 25 °C
0.1% of full scale
  • Accuracy at - 25...60 °C
0.45% of full scale
Temperature drift
45 ppm / °C
Display resolution
15-bit plus sign bit
Least significant bit weight
0.366 μA
Refresh time:
–
  • per module
2 ms(1)
  • per channel
2 ms(1)
Response time:
–
  • with HART enabled
20 ms
  • with HART disabled
2 ms
Maximum load impedance
  • 600 Ω (0...20 mA)
  • 570 Ω (0...21 mA)
Detection type
broken wire
Monotonicity?
Yes
Common mode rejection (50/60 Hz)
90 dB
Crosstalk between channels DC and AC 50/60 Hz
> 70 dB
Non-linearity
0.1% of full scale 
(1)
Refresh times are for only the module internal buffer, and are impacted by PLC cycle time.
HART Specifications
The eX80 HART analog output BMEAHO0412 and BMEAHO0412C modules possess the following HART characteristics:
HART protocols supported(2)
HART versions 5, 6 and 7
Number of channels
4
Scan time:
–
  • Typical(1)
1 s
  • Maximum(1)
5 s
Detection time for a non-responsive device
= (scan time) + (timeouts)
HART command system
ARCOM (interface to a HART master)
Topology
Point-to-point
HART I/O mapping?
Yes 
(1)
Scan time is the same for each channel and for the module. The scan time depends on the byte length of the command. The scan time values do not include PLC cycle time, which should be added to determine overall scan time. 
(2)
The eX80 HART output module supports HART up to versions 7.2 and 7.3.