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IronHorse GSD8 DC Drives User Manual – 1st Ed. Rev. A – 10/15/2019
The programming for Alarm2, which we are using to control the relay on the GSDA-AI-A8 to form a
“Run” output, is much simpler. The GSD8 drive has a “Run” condition, which is true (active) when the
Target Speed is greater than zero, AND the main pickup has received at least one pulse. Therefore, set
Parameter 70, the Alarm2 “OR”, to the “Run” condition’s decimal value, 1024. Set Parameters 71 and
72 to zero. To have the GSDA-AI-A8’s relay output to be controlled by our “Run” condition (Alarm2), set
Parameter 81, Alarm2 Output Routing, at its default value of 3 (assuming the GSDA-AI-A8 is in slot 200).
In addition to these settings, there are various other Parameters that control the Alarm Limits, Alarm
“Reset” behavior, the Alarm1 “Annunciator”, the Displayed Decimal Point position, etc. See the
Parameter Configuration table below for further details
Table: Parameter Configuration
All other parameters may be set to factory defaults, or as desired.
NOTE: Parameter numbers above 999 are located in the GSDA-AI-A8 Modbus Card Options manual.
Parameter
Value
Notes
12
2
Set the Display to show ACTUAL (not "Target") Liters per Minute flow through the pump
13
3
Desired Decimal Point Display is XXX.X
20
200
Minimum Rate (Target Speed) is 20.0 LPM ("200" on the display)
21
1500
Maximum Rate is 150.0 LPM ("1500" on the display)
23
17
Accel rate is 17 Liters per SECOND, or 100 Liters per MINUTE
24
8
Decel rate is 8 Liters per SECOND, or 50 Liters per MINUTE
30
1500
This is the Display Reference value. 150.0 LPM ("1500" on the display)
31
1425
This is the calculated RPM speed of the pump motor at the Display Reference value,
above
32
73
Flow Transducer pulse output rate of 73 pulses per liter
33
10
Number of Seconds for "Initial" Stall Timeout
34
100
Number of tenths-of-seconds for the "Running" Stall Timeout
40
5
Using the UIN1 Input for an Active "Low" Inhibit Input (See Wiring Diagram, above)
42
3
Motor will decel to zero speed upon Inhibit, and accel back to speed when Inhibit
released
50
534
"Fault" (Alarm1) will Activate on several conditions. See "Description", above, for details.
51
137
Along with Parameter 52, forms conditions that will SUPPRESS the "Fault" (Alarm1) from
Activating
52
137
This "AND", with Parameter 51, forms a Neg. Logic "OR" to Suppress "Fault" (Alarm1)
Activation
59
100
"Fault" (Alarm1) needs to Activate when Target or Actual "Speed" is less than 10.0 LPM.
60
1800
"Fault" (Alarm1) needs to Acivate when Target of Actual "Speed" is greater than 180.0
LPM
65
2
"Fault" (Alarm1) will Activate on several conditions. (See "Description" above for details.)
70
1024
"Run" (Alarm2) is being used to reflect the "Run" condition Flag (Routed to GSDA-AI-A8
Relay)
71
0
No conditions set
72
0
No conditions set
81
3
Use the GSDA-AI-A8 card for alarm output
2021
2000
Value to send from GSDA-AI-A8 to Host Drive when GSDA-AI-A8 receives 20mA on its
Input terminals
2041
2000
Value from Host Drive to GSDA-AI-A8 that will cause 20mA to flow across its Output
terminals
Pump Controller with Audible and Visual Alarm
Description:
A waste pump control which displays the pump rate in liters per minute with an audible and visual
alarm output which will warn the operator if the waste flow has stopped. The alarm should not be
able to be silenced and should automatically reset when flow rates have returned to normal. The
display should indicate in the format “xxx.x” (LPM).
Application Diagram:
