Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England
Tel: +44 (0) 1902 773746 Fax: +44 (0) 1902 420639 Email: sales@broycecontrol.com Web: www.broycecontrol.com
The Information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely
at the user’s own risk
.
MXCVR
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Type: MXCVR
Type: MXCVRType: MXCVR
Type: MXCVR
Single Phase,
Single Phase,Single Phase,
Single Phase, Under and
Under and Under and
Under and Over Voltage plus Time Delay
Over Voltage plus Time Delay Over Voltage plus Time Delay
Over Voltage plus Time Delay
17.5mm DIN rail housing
True R.M.S.
Microprocessor based (self checking)
Monitors own supply
Detects if supply exceeds the set Under or Over Voltage trip levels
Fixed trip level - 70% of Un (time delay automatically cancelled when the supply drops below this level)
Adjustments for under and over voltage trip level
Adjustment for time delay (from under or over voltage condition)
1 x SPDT relay output 8A
Intelligent LED indication for supply and relay status
• INSTALLATION AND SETTING
• BEFORE INSTALLATION, ISOLATE THE SUPPLY.
• Connect the unit as required. The Connection Diagram below shows a typical installation, whereby
the supply to a load is being monitored by the Monitoring relay. If a fault should occur (i.e. under
voltage condition), the relay will de-energise and assuming control of the external Contactor, de-
energise the Contactor as well.
Applying power.
• Set the “Over %”
adjustment to maximum and the “Under %”
adjustment to minimum. Set
the “Delay (t)”
to minimum.
• Apply power and the green “Power supply”
and red “Relay”
LED’s will illuminate, the relay will
energise and contacts 15 and 18 will close. Refer to the troubleshooting table if the unit fails to operate
correctly.
Setting the unit.
• Set the “Over %” and the “Under %” adjustments to give the required monitoring range.
• If large supply variations are anticipated, the adjustments should be set further from the nominal
voltage.
• Set the “Delay (t)” adjustment as required. (Note that the delay is only effective should the supply
increase above or drop below the set trip levels. However, if during an under voltage condition the
supply drops below the 2nd under voltage trip level, any set time delay is automatically cancelled and
the relay de-energises).
Note: If the supply voltage increases above the maximum “Over %” trip setting by approx. 5% or
more, the relay will de-energise immediately.
Troubleshooting.
The table below shows the status of the unit during a fault condition.
Supply fault Green LED Red LED Relay
Supply missing Off Off De-energised
Under or Over Voltage condition (during timing) On Flashing Energised for set delay (t)
Under or Over Voltage condition (after timing) On Off De-energised
Supply below 70% of Un (fixed under trip level [2]) On Off De-energised
• TECHNICAL SPECIFICATION
Supply / monitoring
voltage Un (A1, A2): 110, 115, 220, 230, 240V AC
(Voltage should be specified when ordering)
Frequency range: 48 - 63Hz
Supply variation: 70 - 130% of Un
Isolation: Over voltage cat. III
Rated impulse
withstand voltage: 4kV (1.2 / 50µS) IEC 60664
Power consumption: 8VA max.
Trip levels:
Under [2]: 70% of Un (fixed)
Under: 75 - 95% of Un
Over: 105 - 125% of Un
Measuring ranges: Under Over
110V: 82 - 104V 115 - 137V
115V: 86 - 109V 121 - 144V
220V: 165 - 209V 231 - 275V
230V: 173 - 218V 241 - 287V
240V: 180 - 228V 252 - 300V
Trip accuracy: ± 1%
Hysteresis: ≈ 1% of trip level (factory set)
Repeat accuracy: ± 0.5% @ constant conditions
Immunity from micro
power cuts: <50mS
Response time: ≈ 50mS
Time delay (t): 0.2 - 10 sec (± 5%)
Note: actual delay (t) = adjustable delay + response time
Power on delay (Td): ≈ 1sec. (worst case = Td x 2)
Ambient temp: -20 to +60°C
Relative humidity: +95%
Output (15, 16, 18): SPDT relay
Output rating: AC1 250V 8A (2000VA)
AC15 250V 5A (no), 3A (nc)
DC1 25V 8A (200W)
Electrical life: ≥ 150,000 ops at rated load
Dielectric voltage: 2kV AC (rms) IEC 60947-1
Rated impulse
withstand voltage: 4kV (1.2 / 50µS) IEC 60664
Housing: Orange flame retardant UL94 VO
Weight: ≈ 70g
Mounting option: On to 35mm symmetric DIN rail to BS5584:1978
(EN50 002, DIN 46277-3) Or direct surface mounting via 2 x
M3.5 or 4BA screws using the black clips provided on the rear
of the unit.
Terminal conductor size: ≤ 2 x 2.5mm
2
solid or stranded
Approvals: Conforms to IEC. CE and and RoHS Compliant.
EMC:
Immunity: EN/IEC 61000-6-2 (EN/IEC 61000-4-3 15V/m
80MHz - 2.7GHz)
Emissions: EN/IEC 61000-6-4
Options:
1. For other Supply / monitoring voltages, please consult Sales.
• FUNCTION DIAGRAM
Hyst.
Over trip
Monitored
Supply
Fixed
Under trip
Under trip
Hyst.
Td t
ttr Td
t
Terminal Protection to IP20
• MOUNTING DETAILS
45
Insert screwdriver
to release clips
8
9
(
e
x
c
l
.
c
l
i
p
s
)
49 59
Withdraw clips
fully when
surface mounting
93 (+/- 1mm)
• CONNECTION DIAGRAM
Supply / Monitored
Voltage
A1
15
L
N
Voltage monitor
Contactor or
Relay
Local Fuse
Board
A2
16 18
To Load
Installation work must be carried
out by qualified personnel.
• SETTINGS
Dims:
to DIN 43880
W. 17.5mm
1. Power supply status
(Green) LED.
2. Relay output / Timing
status (Red) LED.
3. “Over %” trip level
adjustment.*
4. “Time delay”
adjustment.
5. “Under %” trip level
adjustment*
* scaled as % of the
nominal voltage “Un”.