Ex signal calculator

5115B

Redundancy measurement of temperature by means of two sensors, where the secondary sensor takes over the measurement when a sensor error occurs on the primary sensor.
Duplication of the input signal, e.g. from a temperature sensor or an analog process signal to two separate analog outputs.
Signal calculator with four arithmetical operations: Addition, subtraction, multiplication and division.
Example: Differential measurement:
(Input 1 * K1) - (Input 2 * K2) + K4
Example: Average measurement:
(Input 1 * 0.5) + (Input 2 * 0.5) + K4
Example: Different functions on the outputs:
Output 1 = input 1 - input 2, and Output 2 = input 1 + input 2
I.S. safety barrier and power supply for 2-wire transmitters.

Within a few seconds the user can program PR5115B to a selected application using the configuration program PReset.
A green front LED indicates normal operation, sensor error on each sensor, and functional error.
5-port 3.75 kVAC galvanic isolation.

Mounted vertically or horizontally on a DIN rail. As the devices can be mounted without any distance between neighboring units, up to 42 devices can be mounted per meter.

Supply
Supply voltage, universal	21.6...253 VAC, 50...60 Hz or 19.2...300 VDC
Fuse	400 mA SB / 250 VAC
Max. required power	≤ 3 W
Internal power dissipation	≤ 2.0 W
Isolation voltage
Isolation voltage, test / working	3.75 kVAC / 250 VAC
PELV/SELV	IEC 61140
Response time
Temperature input, programmable (0...90%, 100...10%)	400 ms...60 s
mA / V input (programmable)	250 ms...60 s
Programming	Loop Link
Signal / noise ratio	Min. 60 dB (0...100 kHz)
Accuracy	Better than 0.05% of selected range
Updating time	115 ms (temperature input) 75 ms (mA / V / mV input)
Redundancy switch-over time	≤ 400 ms
Signal dynamics, input	22 bit
Signal dynamics, output	16 bit
Auxiliary voltages: Reference voltage	2.5 VDC ±0.5% / 15 mA
EMC immunity influence	< ±0.5% of span
Extended EMC immunity: NAMUR NE21, A criterion, burst	< ±1% of span

Common input specifications
Max. offset	50% of selected max. value
RTD input
RTD type	Pt100, Ni100, lin. R
Cable resistance per wire	10 Ω (max.)
Sensor current	Nom. 0.2 mA
Effect of sensor cable resistance (3-/4-wire)	< 0.002 Ω / Ω
Sensor error detection	Yes
TC input
Thermocouple type	B, E, J, K, L, N, R, S, T, U, W3, W5, LR
Cold junction compensation (CJC)	< ±1.0°C
Sensor error current	Nom. 30 μA
Current input
Measurement range	0...100 mA
Min. measurement range (span)	4 mA
Input resistance: Supplied unit	Nom. 10 Ω + PTC 10 Ω
Input resistance: Non-supplied unit	RSHUNT = ∞, VDROP < 6 V
Voltage input
Measurement range	0...250 VDC
Min. measurement range (span)	5 mV
Input resistance	Nom. 10 MΩ (≤ 2.5 VDC) Nom. 5 MΩ (> 2.5 VDC) Nom. 10 MΩ (mV input)
mV input
Measurement range	-150...+150 mV

Current output
Signal range	0...20 mA
Min. signal range	10 mA
Load (@ current output)	≤ 600 Ω
Load stability	≤ 0.01% of span / 100 Ω
Current limit	≤ 28 mA
Sensor error indication	Programmable 0...23 mA
NAMUR NE43 Upscale/Downscale	23 mA / 3.5 mA
Voltage output
Signal range	0...10 VDC
Min. signal range	500 mV
Load (@ voltage output)	≥ 500 kΩ
Passive 2-wire mA output
Signal range	4...20 mA
Load stability	≤ 0.01% of span / 100 Ω
Effect of external 2-wire supply voltage variation	< 0.005% of span / V
Max. external 2-wire supply	29 VDC
of span	= of the presently selected range