INOR SR335 GB User Manual

Alarm Unit with Pt100 Input

1. Before Startup

When operating the alarm unit, certain parts of the module can carry dangerous voltage! Ignoring the warnings can lead to serious injury and/or cause damage!

The alarm unit should only be installed and put into operation by qualified staff. The staff must have studied the warnings in these operating instructions thoroughly.

The adjustment with the potentiometer on the front may only be carried out with a screwdriver which is securely insulated against the input voltage! Do not select ranges during operation.

In applications with high operating voltages sufficient distance and isolation as well as shock protection must be ensured.

Safe and trouble-free operation of this device can only be guaranteed if transport, storage and installation are carried out correctly and operation an maintenance are carried out with care.

Appropriate safety measures against electrostatic discharge (ESD) should be taken during range selection and assembly on the alarm unit.

SR335

2. Short description

The alarm unit is used to monitor temperature limit values with RTD sensors. Two switch channels with one SPDT relay each can be separately configured by using DIP switch. The switch point and hysteresis can each be adjusted by means of their own 12-turn potentiometer located on the unit’s front. Input, power supply and the relay outputs are protective separated.

3. Functioning

The signal on input will be compared with the adjusted limit value. Depending on setting the output relays react. The switch state is indicated by a yellow LED. Both switch outputs can be set up as either MIN or MAX alarm. Additionally the SPDT relays can be configured as Normally Open ( de-engergized) or Normally Closed (energized), so it is possible to consider the switch state by power off. The power-detect function (S1-8) set Relay II under proper power conditions independent of the input signal. A green LED on front indicate the auxiliary power.

4. Configuration

Set the DIP switch as indicated in the following table:

Sensor Range

S1- 1 2 3 S2- 1 2 3 4

Connection Z ero

2-wire

3-wire - 50 °C Type 0 °C

Pt100

Pt200 Pt500 Pt1000 200 °C

S1- OFF ON

4 Relay I MAX Relay I MIN 5 Relay I N.O. (Normally Open) Relay I N.C. (Normally Closed) 6 Relay II MAX Relay II MIN 7 Relay II N.O. (Normally Open) Relay II N.C. (Normally Closed) 8 Relay. II normal function Relay. II power detect

• = on, Boldface: Factory setting

After configuration switch point and hysteresis will be adjusted with the potentiometers on the front. Connect a RTD Simulator with desired limit values on input terminals and adjust the set point by observe the LED. Note that the LED indicates the state of the comparator, not the state of the relay because it could be inverted as result of the N.O./N.C setting!

5. Block Diagram

- 100 °C

•

• •

•

+ 50 °C

Span

•

100 °C

•

• •

300 °C 400 °C

•

• •

6. Technical Data

Input

Input Pt10 0 / Pt200 / Pt500 / Pt1000 (switch selectable) Sensor current 1.0 / 0.5 / 0.2 / 0.1 mA Standard Measuring range Zero: -100 / -50 / 0 / +50 °C Span: 100 / 200 / 300 / 400 °C Sensor connection 2-wire, 3-wire (switch selectable) Sensor wire resistor

Set point range 0 ... 100 % of input range with 12-turn

Hystersis 0 ... 60 % of final value with 12-turn potentiom eter

Output

Cont act ty pe 2 SPDT relays, mode of operation switch selectable Switching capability 250 V AC/DC, max. 6 A, max. 1500 VA Switch state indicator Yellow LED Response time Approx. 20 ms

General data

Set point error 0.2 % of final value Temperature coefficient Test voltage 4 kV, 50 Hz, input against power suppl y against

Working voltage2) (Basic insulation)

Protection against dangerous body currents

Power supply

Ambient temperature Operation -20 °C to + 60 °C (-4 to + 140 °F)

EMC3) EN 61326 -1 Construction 22.5 mm hous ing, protection class: IP 20

Weight approx. 100 g

1) age TC in specified op ature range Aver erating temper

2) As far as relevant the standards and rules mentioned above are considered by development and production of our devices. In ad dition relevant assembly rules are to be considered by insta llation of our devices in other equipments . For applications with high working volta ges, take measures to prevent accidental contact and make sure that there is suff icient distance or insulation between adjacent situated devices.

3) Minor devi ations possible during interference

7. Mounting, Electrical Connection

The alarm unit is mounted on standard 35 mm DIN rail.

Terminal assignments

1, 2

Power supply ≅

3, 4

Power supply ≅ 7 Pt Input 8 Input GND

9, 10 Relay I Common 13, 14 Relay II Common

11 Normally-Closed 15 Normally-Closed 12 Normally-Open 16 Normally-Open

8. Dimensions

IEC 60751, α=0.00385

≤ 10 Ω per wire

potentiometer , MIN/MAX-Alarm switchable

150 ppm/K of final value.

both relays; 2.5 kV, 50 Hz, relay I against r elay II 600 V AC/DC for overvoltage categor y III and

pollution degree 2 acc. to EN 50178 bet ween input, power supply and relay outputs. Up to 300 V AC/DC between both relay outputs.

Protective separation according to EN 50178 by

reinforced insulation up to 300 V AC/DC for overvoltage category II and pol lution degree 2 between input, power supply and relay outputs.

24 V AC/DC, ± 15 % AC: 48 ... 62 Hz, ca. 2 VA; DC: ca. 1 W

Transport and storage - 35 °C to + 85 °C (-31 to +185 °F)

77,5 x 84 x 22,5 mm (H x D x W)

5 Pt Input 6 Pt Input

9. Order Information

SR335, 24 VAC/DC 70SR335001 Configuration 70CAL00001

LIMITED WARRANTY

INOR Process AB, or any other affiliated company within the Inor Group (hereinafter jointly referred to as ”Inor”), hereby warrants that the Product will be free from defects in materials or workmanship for a period of five (5) years from the date of delivery (”Limited Warranty”). This Limited Warranty is limited to repair or replacement at Inor’s option and is effective only for the first end-user of the Product. Upon receipt of a warranty claim, Inor shall respond within a reasonable time period as to its decision concerning:

1. Whether Inor acknowledges its responsibility for any asserted defect in materials or workmanship; and, if so,

2. the appropriate cause of action to be taken (i.e. whether a defective product should be replaced or repaired by Inor).

This Limited Warranty applies only if the Product:

1. is installed according to the instructions furnished by Inor;

2. is connected to a proper power supply;

3. is not misused or abused; and

4. there is no evidence of tampering, mishandling, neglect, accidental damage, modification or repair without the approval of Inor or damage done to the Product by anyone other than Inor.

This Limited Warranty is provided by Inor and contains the only express warranty provided.

INOR SPECIFICALLY DISCLAIMS ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND ANY IMPLIED WARRANTY, GU ARANTEE OR REPRESENTATION AS TO SUITABILITY FOR ANY PARTICULAR PURPOSE, PERFORMANCE, QUALITY AND ABSENCE OF ANY HIDDEN DEFECTS, AND ANY REMEDY FOR BREACH OF CONTRACT, WHICH BUT FOR THIS PROVISION, MIGHT ARISE BY IMPLICATION, OPERATION OF LAW, CUSTOM OF TRADE OR COURSE OF DEALING, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. EXCEPT AS PROVIDED HEREIN, INOR FURTHER DISCLAIMS ANY RESPONSIBILITY FOR LOSSES, EXPENSES, INCONVENIENCES, SPECIAL, DIRECT , SECONDARY OR CONSEQUENTIAL DAMAGES ARISING FROM OWNERSHIP OR USE OF THE PRODUCT.

Products that are covered by the Limited Warranty will either be repaired or replaced at the option of Inor. Customer pays freight to Inor, and Inor will pay the return freight by post or other “normal” way of transport. If any other type of return freight is requested, customer pays the whole return cost.

INOR Process AB

PO Box 9125 200 39 MALMÖ SWEDEN

Phone: +46 40 31 25 60 Fax: +46 40 31 25 70 E-mail: support@inor.se Internet: www.inor.com

86BIS00035 2008-07