Rockwell Automation Allen-Bradley IntelliVAC 1503VC-BMC5, Руководство пользователя

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Rockwell Automation Publication 1503-UM053C-EN-P - March 2015 29
Installation and Wiring Chapter 3
Figure 15 - Motor Jogging Control
Undervoltage Protection The IntelliVAC controller protects the contactor from control voltage dips and
loss of power. It provides undervoltage release and prevents attempts to close the
contactor when insufficient power is available to guarantee reliable closing of the
contacts. The undervoltage protection will be initiated under the following
conditions, regardless of nominal control voltage:
1.
If the supply voltage drops below 90V (AC or DC) during the first 200 ms
after a Close command is received. This applies to electrically held and
mechanical latch contactors.
2.
If the supply voltage drops below 72V (AC or DC) after the 200 ms close
sequence (electrically held contactors only).
Time Delay Undervoltage The IntelliVAC can be configured to provide time delay undervoltage (TDUV)
protection. The feature is available to keep electrically held contactors closed
during a voltage dip or brief power loss. This option may require the addition of a
capacitor (see below). See
Chapter 6 for typical capacitor sizing. The capacitor is
connected to terminals 1(-) and 2(+) of the IntelliVAC, see Figure 16 .
MOV
3 2
1
EC
-
+
4
TCO
12
11
AUX CCO
5
6
L1 L2/N G
+ -
M-IV
9 10
M-IV
15 16
M
M-IV
M
+ -
M-IV
7 8
Control Power
Control Power Fuse *
* See Table 5 on page 19 for recommended fuse sizing.
Emergency Stop
(when required)
Overload
Stop
Open
Start
Close
Contactor
Status
Jog
ATTENTION: If the TDUV feature is used, the contactor will not open until the
programmed TDUV time has expired. Therefore, applications requiring an
immediate removal of power during emergency stop conditions are not
compatible with the TDUV feature.