Lenze MCH Series - Manual (Page 59)

13435744_EDBMH01_v13 55
24 AUTO SOURCE
This parameter selects the speed reference source that the drive will follow when it is in
AUTO mode. The following options are possible:
KEYPAD The
p and q keys control the drive speed.
0-10 VDC The drive will follow a 0-10 VDC signal wired between TB-5A (+)
and TB-2 (-).
4-20 MA The drive will follow a 4-20 mA signal wired between TB-5B (+) and
TB-2 (-).
PRESET #1 - #4 The drive will run at a programmable preset speed. Refer to
Parameters 1-4.
MOP The drive speed is controlled by two contacts (one to increase the
speed and the other to decrease the speed). Program TB-13A
(Parameter 47) to DECREASE FREQ, and TB-13B (Parameter 48)
to INCREASE FREQ. Closing TB-13A to TB-2 will decrease the
speed, and closing TB-13B to TB-2 will increase the speed. Refer
to Section 14.2.4.
SELECTED The drive speed will be determined by whatever speed reference
is selected using the TB-13 terminals. Refer to Parameters 47, 48,
and 49.
25 START METHOD
WARNING!
Automatic start of equipment may result in damage to equipment
and/or injury to personnel! Automatic start should only be used on
equipment that is inaccessible to personnel
This parameter selects the starting method for the drive, and can be set for one of the
following:
NORMAL
The drive will start when the appropriate contact closure is made
on the terminal strip (in REMOTE mode), or by pressing the keypad
START key (in LOCAL mode). To start the drive in NORMAL mode,
a start command must be issued at least two seconds AFTER input
power is applied.
POWER UP The drive will automatically start upon application of input power.
The drive MUST be in AUTO mode, and the start command MUST
be present when power is applied for this function to operate.
AUTO 1 FLYING AUTO RESTART - LOW performance. Synchronization in
approximately 6 seconds with current levels up to 50% of the drive
rating. This setting results in a slow, smooth synchronization.
AUTO 2 FLYING AUTO RESTART - MEDIUM performance. Synchronization
in approximately 1 second with current levels up to 50% of the drive
rating. This setting allows faster synchronization while retaining
smoothness.
AUTO 3 FLYING AUTO RESTART - HIGH performance. Synchronization
in approximately 1 second with current levels up to 100% of the
drive rating. This setting allows the fastest synchronization, but
sacrifices smoothness.