Universal trip amplifier

Name: Universal trip amplifier 4131
Rating: 3.0 (7 reviews)

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Programmable via detachable display front (PR 4500 series), process calibration, relay simulation, password protection, error diagnostics and selection of help text in several languages.

Process control with 2 pairs of potential-free relay contacts which can be configured to suit any application.
Trip amplifier with window function defined by a high and a low setpoint. The relay changes state outside the window.
Relay latch function, where the relay is activated and can only be reset manually.
Sophisticated sensor error surveillance, where one relay holds the state immediately prior to the sensor error, while allowing the process to continue. The other relay can be set for sensor error alarm so that the defect sensor can be replaced immediately.

When 4131 is used with the PR 4500 display series, all operational parameters can be modified to suit any application. As the 4131 is designed with electronic hardware switches, it is not necessary to open the device for setting of DIP-switches.
A green front LED indicates normal operation and malfunction. A yellow LED is ON for each active output relay.
Continuous check of vital stored data for safety reasons.
3-port 2.3 kVAC galvanic isolation.

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	≤ 2.0 W
Max. power dissipation	≤ 2.0 W
Isolation voltage
Isolation voltage, test / working	2.3 kVAC / 250 VAC
Response time
Temperature input (0...90%, 100...10%)	≤ 1 s
mA / V input (0...90%, 100...10%)	≤ 400 ms
Auxiliary supplies
2-w. supply (term. 44...43)	25...16 VDC / 0...20 mA
Programming	PR 4500 communication interfaces
Signal / noise ratio	Min. 60 dB (0...100 kHz)
Accuracy	Better than 0.1% of sel. range
EMC immunity influence	< ±0.5% of span
Extended EMC immunity: NAMUR NE21, A criterion, burst	< ±1% of span

RTD input
RTD type	Pt10/20/50/100/200/250; Pt300/400/500/1000; Ni50/100/120/1000; Cu10/20/50/100
Cable resistance per wire	50 Ω (max.)
Sensor current	Nom. 0.2 mA
Effect of sensor cable resistance (3-/4-wire)	< 0.002 Ω / Ω
Sensor error detection	Yes
Short circuit detection	< 15 Ω
Linear resistance input
Linear resistance min....max.	0 Ω...10000 Ω
Potentiometer input
Potentiometer min....max.	10 Ω...100 kΩ
TC input
Thermocouple type	B, E, J, K, L, N, R, S, T, U, W3, W5, LR
Cold junction compensation (CJC) via ext. sensor in 5910	20...28°C ≤ ±1°C, -20...20°C / 28...70°C ≤ 2°C
CJC via int. mounted sensor	±(2.0°C + 0.4°C * Δt)
Sensor error detection	Yes
Sensor error current: When detecting / else	Nom. 2 μA / 0 μA
Current input
Measurement range	0...23 mA
Programmable measurement ranges	0...20 and 4...20 mA
Input resistance	Nom. 20 Ω + PTC 50 Ω
Voltage input
Measurement range	0...12 VDC
Programmable measurement ranges	0/0.2...1, 0/1...5, 0/2...10 VDC
Input resistance	Nom. 10 MΩ

Relay output
Relay functions	Setpoint, Window, Sensor error, Latch, Power and Off
Hysteresis	0...100%
ON and OFF delay	0...3600 s
Max. voltage	250 VRMS
Max. current	2 AAC or 1 ADC
Max. AC power	500 VA
Sensor error reaction	Break / Make / Hold
of span	= of the presently selected range