7
MBA200
·
Operating Instructions 8011417 V 2.2
·
© MBA Instruments GmbH Germany
Signal
Signal
Status
24 VDC
24 VAC
98
°C
ON
OF
F
Bin-level Indicator MBA200
3.4.4
Type 210 (115 or 230 VAC)
3.4.5
Type 220 (24 VAC/DC)
S3
S2
μC
AC/DC
S2
stab.
PTC
24 V
0 V
98 °C
H
L
S1
MBA
210
K1
MBA
220
S1
K1
K2
PE L1 L1 N
115 VAC
1 2 3
4 5
Stop
S1
H
L
mech.
1 2 3 4 5 6
24 0
230 VAC
Rotat.
Status
PE
Signal contact
Use the potential-free make&break relay contact K1 for
the level indication.
Depending on setting of S1, relay K1 is activated either when
the paddle is rotating or when the paddle is stopped.
Select which setting provides a fail-safe operation in your
system:
Position H
Position L
S1
Fail-safe FULL level
indication:
K1 is activated when the
paddle is rotating.
During power failure, the
»full« status is indicated
(like paddle is stopped).
Fail-safe EMPTY level
indication:
K1 is activated when the
paddle is stopped.
During power failure, the
»empty« status is
indicated (like paddle is
rotating).
Status output
S3 switches the power voltage (L1) between terminal 4 and
5, directly actuated by the motor mechanism.
Permissible contact load
Direct current:
60 VDC, 1 A (DC 1)
Alternating current:
250 VAC, 2 A (AC 15)
Power supply
Mains supply voltage:
115 VAC or 230 VAC
(see nameplate)
–15 %/+10 %
Connect the power supply to terminals L1 and N.
Connect the protective earth (PE) conductor to the
terminal in the unit head.
Overvoltage can immediately destroy internal electronic
components.
Observe the mains voltage specification on the
nameplate (
page 11, § 7.1
).
Overheat fuse
Type 210 is equipped with an overheat fuse which cuts off
the power supply when the internal temperature exceeds
98 °C (208 °F). When the fuse is blown, the electronics
board needs to be replaced for repair.
Wiring example as FULL level indicator
Signal contact
Use make&break relay contact K1 for the level indication
(paddle rotating / stopped). Depending on setting of S1-1,
relay K1 is activated either when the paddle is rotating or
when the paddle is stopped.
Select which setting provides a fail-safe operation in your
system (
§ 3.5
).
Status contact
Relay contact K2 is used to indicate a fault condition. Full
information
page 11, § 6
.
Permissible contact load
Direct current:
60 VDC, 1 A (DC 1)
Alternating current:
250 VAC, 2 A (AC 15)
Power supply
Permissible power supply voltage:
Direct current:
24 VDC
–10 %/+30 %
Alternating current:
24 VAC
–15 %/+10 %
Provide an external power fuse.
Connect the power supply to terminals »24 V« (+) and
»0 V« (
–).
Connect the protective earth (PE) conductor to the
terminal in the unit head.
Power overload fuse
The power overload fuse cuts off the internal power supply
in case of high current.
When overload fuse has been released:
Switch off the
power supply externally and wait for approximately one
minute for the fuse to cool down; then switch on the
power supply again.
If the overload fuse is released again:
Search for the
trouble; or replace the electronics board, if required.
Overheat fuse
The overheat fuse cuts off the power supply when the
internal temperature exceeds 98 °C (208 °F). When this fuse
is blown, the electronics board needs to be replaced for
repair.
L1
MBA
210
L1
3
S1
K1
H
N
1 2
N
fill control
