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Datasheet - RS485 Modbus Slave Interfaces

Datasheet - RS485 Modbus Slave Interfaces

Product catalog summary

Overview: This document provides technical specifications and application details for NTC probes used with em4 systems. These probes are designed for direct connection without a converter on analog inputs, offering a cost-effective temperature control solution for various applications such as HVAC, compressors, geothermal systems, swimming pools, and fountains.

Specifications:

NTC probes are configured as potentiometers via the em4 software.
Probes have different ohmic values and measurement ranges, suitable for various temperature conditions.
Specific probes include NTC2 PVC, NTC1, NTC2 Stainless 305, NTC2 POM, and NTC3 Silicone, each with unique temperature ranges and codes.

General Characteristics:

Materials used include PVC, AS, Stainless, POM, and Silicone.
Cable types and lengths vary, with protection ratings ranging from IP64 to IP67.
Isolation classes and dielectric strengths are specified according to IEC standards.

Accessories:

A 316 stainless steel protective sleeve is available, operating between -20°C to +400°C and up to 16 bar pressure.

Diagrams and Curves:

Diagrams provide dimensions for each probe type.
Curves illustrate accuracy, showing that stability in supply improves accuracy.

Connections:

Details on connections include configurations for potentiometer inputs and isolating sources.
Specifications for quick-blowing fuses and circuit protection are provided.

Catalog excerpts

Datasheet - RS485 Modbus Slave Interfaces-1

> Direct connection with no converter on analog input > Easy-to-use and low-cost temperature control solution > Fields of application: HVAC, compressors, geothermal systems, swimming pools, fountains > Analog input configured as a potentiometer via the NTC functions in the em4 soft NTC PVC probe NTC probe Silicone probe Cable length Protection rating Isolation class Dielectric strength according to IEC 335 Flank lead 1/2 Length 68 mm Analog inputs are configured as a potentiometer in the em4 soft programming software via the function:

Open the catalog to page 1

Datasheet - RS485 Modbus Slave Interfaces-2

Accuracy: the more stable the supply is, the better the accuracy Connections – – (1) 1 A (UL248) quick-blowing fuse, circuit-breaker or circuit circuit protector (US) (1) 1 A (UL248) quick-blowing fuse, circuit-breaker or protector (US) – (2) Isolating source (2) Isolating source (1) 1 A (UL248) quick-blowing fuse, circuit-breaker or circuit protector (US) (3) Configured input input "potentiometer" (3) Configured (2) Isolating source "potentiometer" (3) Configured input "potentiometer"

Open the catalog to page 2

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