RG-MHMOD 6
Drive Setup & Operation
4
MCH Drive Setup & Operation
4.1 Serial Address
All AC Tech drives have a Serial Address Parameter that must be programmed prior to attempting to
operate the serial interface (Programming Parameter #58 / AC Tech Register #109).
4.2 Serial Communications Parameter
All AC Tech drives have a Serial Communications Parameter that governs the operation of the Serial Link.
On MCH drives this is #57 SERIAL LINK (register #108). Table 4 lists the selections for MCH Parameter 57,
SERIAL LINK.
Table 4: MCH Parameter 57 Selections
Setting
Description
Watchdog Timeout Period
00
DISABLE
01
WITH TIMER
10 sec
02
WITHOUT TIMER
Explanation of Terms:
•
DISABLED
serial link not operational (this is the drive's default setting)
•
WITH TIMER
serial link allows reading & writing of both control & programming parameters.
Watchdog timer is enabled (refer to section 4.6,
Watchdog Timer).
•
WITHOUT TIMER serial link allows reading & writing of both control & programming parameters.
Watchdog timer is disabled (refer to section 4.6,
Watchdog Timer).
Prior to attempting to communicate with the drive, Serial Communications Parameter must be appropriately
programmed.
4.3 Control Parameter
The Control Parameter on MCH drives (Programming Parameter #30 / AC Tech Register #81) determines
how much control a user has over a drive via the serial link. The Control Parameter must be appropriately
programmed for a particular application. Refer to the MCH Series Installation and Operation Manual (MH01)
for a detailed explanation on programming the drive parameters.
Table 5: Control (Parameter 30)
Setting
Description
00
NORMAL (default)
01
NORM NO HAND
02
SERIAL SPEED
03
S SPD / NO HAND
04
SERIAL AUTO
05
S AUTO / NO HAND