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Rev:5.0
6/08/2010
Rev:5.0
6/08/2010
MSST5/10-S UserManual
MSST5/10-S UserManual
3 Installation/Connections
Connections wires
3.1 Connecting the power supply
The MSST5-S accepts a DC supply voltage from 24 to 48VDC. The MSST10-S accepts a DC sup-
ply voltage from 24 to 80VDC.
Using the connector supplied and AWG 16 or 18 wire, connect to the power supply as in the dia-
gram below.
Fusing
Internal fuse
: the MSST5-S and MSST10-S contain internal 10 amp fast acting fuses
External fuse (optional)
: if desired, we recommend:
MSST5
MSST10
3AG, 4A
3AG, 6.25A
Littlefuse 313004P
Littlefuse 3136.25P
Be careful not to reverse the wires. Reversing the connections may destroy the
drive and void the warranty.
Regeneration
When a step motor decelerates, it converts the kinetic energy of the load into electrical power,
much like a generator. Some of this power is consumed in the motor and some in the drive. In ap-
plications involving large loads running at high speeds, considerable energy is transferred to the
power supply. Generally, simple, linear power supplies have large capacitors capable of absorbing
this energy without damage. Switching power supplies usually shut down due to an over voltage
condition. Excess energy is then transferred back to the drive and can damage it. To prevent this,
the use of an RC-50 regen clamp is recommended as illustrated below.
