Bender VMD461 with CD440 Quick Start Manual
Quickstart
108
77
93
74
98
71,7
62,5
48,5
93,0
EN
VMD461 with CD440
Multifunctional voltage relay
Intended use
The multifunctional voltage monitoring relay VMD461 monitors frequencies, undervoltages and overvoltages in DC, AC and 3(N)AC systems. The
phase voltages and/or line-to-line voltages are measured as r.m.s. value
and are continuously shown on the device display. The measured value required to trigger the alarm relay is stored. The VMD461 features additional
measuring functions for:
ROCOF df/dt
Vector shift monitoring
Unbalance monitoring
Phase sequence monitoring
The corresponding ANSI codes for all available measuring functions are provided.
Configurable delay times allow considering special installation-specific properties (e.g. device-specific
start-up procedures). The VMD461 requires an external supply voltage.
The optional use of a CD440 coupling device extends the voltage range that can be monitored to DC/
3AC 1200 V or 1AC/3NAC 690 V. Any other use than that described in this manual is regarded as improper. The quickstart does not replace the manual of the device. Download: www.bender.de/manuals
Safety instruction
Danger of electrocution due to electric shock!
Touching live parts of the system carries the risk of:
An electric shock
Damage to the electrical installation
Destruction of the device
Before installing and connecting the device, make sure that the installation has
been de-energised. Observe the rules for working on electrical installations.
Dimension diagrams VMD461 (left) und CD440 (right) in mm
VMD461_D00314_00_Q_XXEN/10.2018
1
Mounting on DIN rail and screw mounting
1.
2.
4.
„Klick“
3.
VMD461
CD440
2.
B98060008
M4
M4
98 mm
M4
3.
77 mm
4.
„Klick“
M4
Wiring
Depending on the application, connect the device according to the following wiring diagrams..
1.
100 mm
The VMD461 can be operated without a CD440 in appropriate power supply
systems (230/400 V).
Legend wiring diagrams
Element Funktion
A1, A2
L1, L2/DC+,
L3, N/DC-
Supply voltage U
Power supply connection
(see ordering details)
s
11, 12, 14 Connection to alarm relay K1
21, 22, 24 Connection to alarm relay K2
DG1/2,
D1, D2
Contact monitoring
DG1/2: GND
D1: Feedback signal contact to alarm relay K1
D2: Feedback signal contact to alarm relay K2
(feedback signal contacts optionally NC/NO/off)*
RTG, RT1
RTG: GND
RT1: Remote-trip input (optionally NC/NO/off )*
A, B Connection to communication interface BMS bus
R
on/off
* Explanation: NC (closed in non-operating state)
Activate or deactivate the terminating resistor of the BMS bus (120 Ω )
NO (open in non-operating state)
off (switched off)
Risk of unwanted device
failure!
Do not supply device from the
monitored system. Pay attention
to maximum supply voltage.
2
VMD461_D00314_00_Q_XXEN/10.2018
Unearthed system
*
CD440 optional
L1
L2
PE
U
n
L1
L2/DC+
L3 N/DC-
6 A
L1' L2'/DC+' L3'
11
21 241222
A B
RTGRT1
14
N'/DC-'
K1
K2
A1 A2
U
S
6 A
6 A
CD440
L1 L3 N/DC-L2/DC+
L1' L3' N'/DC-'L2'/DC+'
1112142122
24
L3
L2/DC+
L1
D2
D1
DG1/2
RTG
RT1
2
1
ON
ALARM
MENU
INFO
TEST
RESET
ESC
LINETRAXX®
VMD461
V
N/DC-
L1
L2/DC+L3N/DC-
6 A
AC 3(N)AC
L1
L2
L3
N
PE
6 A
L1
L2/DC+
L1 L3 N/DC-L2/DC+
CD440
6 A
L3 N/DC-
6 A 6 A
*
CD440 optional
VMD461_D00314_00_Q_XXEN/10.2018
L1
24
L3
L2/DC+
ESC
INFO
TEST
RESET
MENU
N/DC-
RT1
RTG
21 241222
11
K1
K2
14
S
LINETRAXX®
ALARM
L1' L3' N'/DC-'L2'/DC+'
L1' L2'/DC+' L3'
L1
VMD461
2
1
ON
N'/DC-'
L2/DC+L3N/DC-
1112142122
D2
D1
DG1/2
V
U
6 A
6 A
A1 A2
A B RTGRT1
3
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