Measuring Point Change-over Switch Type MUM8
Measuring point change-over switch, for 8 Measuring points
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
- Accessory: Installation frame ER8 for panel mount
Rated supply-Voltage Us
AC 220-240 V/ DC 24 V
50/ 60 Hz
< 2 VA
Number of input channels
8 channels with common ground or 4 x 2 channels potentially separated
1 LED / channel
max. AC/ DC 24 V
max. 100 mA
max. 2,4 W or 2,4 VA (ohmic Load)
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
manual / automatic channel select 3 bit BCD potentially separated from analog part
for all control inputs 0/24 V (PLC-compatible) aktive high or low selectable with DIP-switches
adjustable (potentiometer) 0,5…10 s
break between 2 channels app. 1-2 ms
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
EN 50 178
Rated insulation voltage Ui
AC 250 V/ DC 300 V
EN 61 000-6-2, EN 61 000-6-3, EN 61 558
Normal conditions of use
rated ambient temperature
EN 60 068-1
Design / Installation Frame
V8, switchgear mount / Front mounting kit ER8, 8 TE
Dimensions (h x w x d) mm
Design V8: 90 x 140 x 58
IP 20, EN 60 529
IP 20, EN 60 529
app. 150 g
on 35 mm DIN-rail according to EN 60 715
screw-mount M 4 with additional bar (not included)
FAQ / Product videos