Measuring Point Change-over Switch Type MUM8

Measuring point change-over switch, for 8 Measuring points

Measuring Point Change-over Switch Type MUM8

Part number

T236030

Product description

 

Measuring point change-over switches allow the connection of up to 16 measuring points to 1 measuring device, e.g. an analog input of a PLC.

The inputs can be selected with a BCD-Code. Manual selection can be made with a code-switch. 

In automatic mode, the inputs are polled (tact-time adjustabe) and thus be displayed in succession. When using a measuring point change-over switch, only 1 measuring input is needed to collect multiple values.
Especially with slowly changing signals like temperatures, measuring every other second is enough. Expensive inputs for Pt100 or 0-10 V/0-20 mA at PLCs can be saved.

With the MUM8, alternatively 8 measuring points with common ground or 4 measuring points with separated ground can be switched.

  • PLC-compatibel. Channelselection over 3 bit parallel (24 V), e.g. PLC or by a code switch
  • Optional switching + or -
  • 8 channels (0/4 ... 20 mA, 0 ... 10V, Pt 100) with common ground
  • 4 double-channels (= Pt 100/3-wire and thermocouples) 
  • Supply-voltage AC 230 V or DC 24 V
  • LED-display for selected channel
  • Clock time in automatic mode adjustable 0,5 ... 10 s
  • plug-in terminals

 

Technical Data

Rated supply-Voltage Us

.......

AC 220-240 V/ DC 24 V

 

Frequency

.......

50/ 60 Hz

 

Power consumption

.......

< 2 VA

 

Admissible tolerance

.......

AC -10…+10%

 

Inputs

Number of input channels

.......

8 channels with common ground or 4 x 2 channels potentially separated

 

Display

.......

1 LED / channel

 

Switching voltage

.......

max. AC/ DC 24 V

 

Switching current

.......

max. 100 mA

 

Switching capacity

.......

max. 2,4 W or 2,4 VA (ohmic Load)

 

Relays

.......

8 x 1 co

 

expected contact life mech.

.......

approx. 108 operations

 

expected contact life elec.

.......

5 x 107 operations at 12 V/ 10 mA
3 x 106 operations at 24 V/ 0,1 A

 

Control inputs

.......

manual / automatic channel select 3 bit BCD potentially separated from analog part

 

Control signal

.......

for all control inputs 0/24 V (PLC-compatible) aktive high or low selectable with DIP-switches

 

Clock-time

.......

adjustable (potentiometer) 0,5…10 s

 

Switching time

.......

break between 2 channels app. 1-2 ms

 

Outputs

Outputs

.......

max. 2

 

at single channel

.......

In 0 - 7 to Out 1 + Out 2

 

at double channel

.......

In 0 - 3 to Out 1
In 4 - 7 to Out 2

 

Test Conditions

Standard

.......

EN 50 178

 

Rated insulation voltage Ui

.......

AC 250 V/ DC 300 V

 

Insulation

.......

EN 60664

 

pollution grade

.......

4 kV

 

EMC

.......

2

 

Transformer

.......

EN 61 000-6-2, EN 61 000-6-3, EN 61 558

 

Normal conditions of use

rated ambient temperature

.......

0...+50°C

 

storage temperature

.......

-40°...+75°C

 

environmental conditions

.......

EN 60 068-1

 

on-period

.......

100%

 

Housing

Dimensions (h x w x d) mm

.......

Design K: 75 x 22,5 x 118

 

Protection housing

.......

IP 20, EN 60 529

 

Protection terminals

.......

IP 20, EN 60 529

 

Fitting position

.......

any

 

Weight

.......

app. 150 g

 

Attachment

.......

on 35 mm DIN-rail according to EN 60 715

 

Option

.......

screw-mount M 4 with additional bar (not included)