INOR SR335 GB User Manual

INOR Hardware

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Alarm Unit with Pt100 Input

SR335































SR335



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.

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

Zero

2-wire

- 100 °C

3-wire

- 50 °C

Type

0 °C

Pt100

+ 50 °C

Pt200

Span

Pt500

100 °C

Pt1000

200 °C

300 °C

400 °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

6. Technical Data

1)

age TC in specified op

ature range

Aver

erating temper

Input

Input

Pt100 / Pt200 / Pt500 / Pt1000 (switch selectable)

Sensor current

1.0 / 0.5 / 0.2 / 0.1 mA

Standard

IEC 60751,

α=0.00385

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

≤ 10 Ω per wire

Set point range

0 ... 100 % of input range with 12-turn
potentiometer , MIN/MAX-Alarm switchable

Hystersis

0 ... 60 % of final value with 12-turn potentiometer

Output

Contact type

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

1)

150 ppm/K of final value.

Test voltage

4 kV, 50 Hz, input against power supply against
both relays; 2.5 kV, 50 Hz, relay I against relay II

Working voltage

2)

(Basic insulation)

600 V AC/DC for overvoltage category III and
pollution degree 2 acc. to EN 50178 between input,
power supply and relay outputs. Up to 300 V
AC/DC between both relay outputs.

Protection against
dangerous body currents

2)

Protective separation according to EN 50178 by
reinforced insulation up to 300 V AC/DC for
overvoltage category II and pollution degree 2
between input, power supply and relay outputs.

Power supply

24 V AC/DC,

± 15 %

AC: 48 ... 62 Hz, ca. 2 VA; DC: ca. 1 W

Ambient temperature

Operation -20 °C to + 60 °C (-4 to +140 °F)
Transport and storage -35 °C to + 85 °C (-31 to +185 °F)

EMC

3)

EN 61326 -1

Construction

22.5 mm housing, protection class: IP 20
77,5 x 84 x 22,5 mm (H x D x W)

Weight approx. 100 g

2) As far as relevant the standards and rules mentioned above are considered

by development and production of our devices. In addition relevant assembly
rules are to be considered by installation of our devices in other equipments.
For applications with high working voltages, take measures to prevent
accidental contact and make sure that there is sufficient distance or insulation
between adjacent situated devices.

3) Minor deviations possible during interference


7. Mounting, Electrical Connection
The alarm unit is mounted on standard 35 mm DIN rail.










8. Dimensions

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, GUARANTEE 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

86BI

S00

0

35

200

8

-0

7

Terminal assignments

1, 2

Power supply

5

Pt

Input

3, 4

Power supply

6

Pt

Input

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

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