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IronHorse GSDA-CM-8 User Manual – 1st Ed. Rev. A – 10/15/19
Warranty
AutomationDirect, Inc. (ADC) warrants its products to be free from defects in material and
workmanship. The exclusive remedy for this warranty is ADC factory replacement of any part or parts
of such product which shall within 12 months after delivery to the purchaser be returned to ADC
factory with all transportation charges prepaid and which ADC determines to its satisfaction to be
defective. This warranty shall not extend to defects in assembly by other than ADC or to any article
which has been repaired or altered by other than ADC or to any article which ADC determines has been
subjected to improper use. ADC assumes no responsibility for the design characteristics of any unit
or its operation in any circuit or assembly. This warranty is in lieu of all other warranties, express or
implied; all other liabilities or obligations on the part of ADC, including consequential damages, are
hereby expressly excluded.
NOTE: Carefully check the GSDA-CM-8 for shipping damage. Report any damage to the carrier
immediately. Do not attempt to install the card if visible damage is evident to either the circuit or to
the electronic components.
GSDA-CM-8 Overview
The GSDA-CM-8 is an AutomationDirect ASCII “option card” featuring RS-232 or RS-485 serial
communications and additional features. RS-232 or RS-485 communication is controlled by the
position of the P3 jumper and software parameter setup. Baud rate is configurable from 300 to
57600. In addition, the GSDA-CM-8 can output a square wave frequency from 4 pulses per minute to
9999 ppm. An analog input is also available which can be configured for several different functions.
Additionally, the GSDA-CM-8 can drive the “Auto/Manual” LED Annunciator to display whether the
source of the Target setting comes from the analog input or from the “Front Panel” (“Manual”).
In “Manual” mode, the GSD8 Drive uses the front panel display and the Up/Down buttons to set the
Target Speed (or Time). The value in Parameter 120: Auto/Manual Master Slot, determines whether
or not the GSD8 drive will follow the GSDA-CM-8 master reference. The Auto/Manual master can
be assigned to any slot, with the card in the assigned slot is responsible for setting the “Auto/
Manual” mode for the drive. If the GSDA-CM-8 option card is in the Auto/Manual master slot and the
GSDA-CM-8 jumper is in place for Auto mode, then the drive will also be in Auto mode. The GSD8 drive
will then accept the target speed setting from the option card. Whether or not the GSD8 drive follows
the GSDA-CM-8 analog input source depends on the analog input routing option on the serial card. If
the card is the Auto/Manual master and is in “Auto” mode, then there are several ways the GSDA-CM-8
can change the target speed. In Auto or Manual mode, the GSDA-CM-8 serial communications output
provides a real time data stream that reports the GSD8 driven motor Actual (Tach) speed. This can be
used by a SCADA system to provide “feedback” that the SCADA speed setting was received and acted
upon by the GSD8 Drive.
