Page 12
IronHorse GSDA-CM-8 User Manual – 1st Ed. Rev. A – 10/15/19
User-Assignable Output
Parameter 5030 = 4
The GSDA-CM-8 includes an advanced User-Assignable Output. This feature allows the user to
customize the physical output circuit normally used as a Frequency Generator Output for use as a
general-purpose output capable of driving LEDs, small relays, solid-state alarm modules, and similar
devices. This output is an Open-Collector NPN transistor which is capable of sinking a maximum
of 50mA up to 15 volts DC. Pin 5, “Frequency Generator Out” and pin 6, “Circuit Common” are
used to connect the output to the desired output device. The output can be configured as up to
eleven different conditions, such as “Pickup Stalled” and “Actual Speed Outside Limits” by using
its assignment matrix switches. See main control manual Alarm Logic section. Through the use of
the inverter matrix switches in the main control manual Alarm Logic section, the opposite of any
condition(s) can be used instead (“Pickup not Stalled”, “Actual Speed Limit not Exceeded”, etc.) for
even more flexibility. Additionally, the output can be set to either Normally Open (N.O.) or Normally
Closed (N.C.) operation with the Output Selection Switch, parameter 5031. See the main control
manual Item Descriptions section for details. This output arrangement provides the user with literally
hundreds of possible combinations, while keeping the actual electronic complexity (and cost) of the
control to a minimum.
There are two different ways that the circuitry of the User-Assignable Output can be expressed. For
those familiar with digital logic symbols, please refer to the figure on the main control manual Alarm
Logic section for a circuit description. Otherwise, you can use Ladder Logic symbology.
Using the Frequency Generator Output
Parameter 5030 = 1, 2, or 3
The GSDA-CM-8 has a frequency generator output that can be used as the leader signal to drive a
network of followers. The GSDA-CM-8 that is generating this signal can even follow its own generator’s
output. This allows a ratio system to operate without a dedicated leader motor and pick-up. To follow
this signal, connect pin 5 of the RJ45 connector to the spare input (P1-8) of the follower GSDA-CM-8
controls. This signal may also drive the master input of other
ADC
controls such as the GSDA-DP-D,
GSD8-240-5C, and GSD8-240-5C-D.
The frequency generator output is available on pin 5 of the RJ45 connector. The common for this
signal is available either from pin 6 of the RJ45 connector or from the main terminal block P1-5. Use
only one of these common terminals to make electrical connections between devices. The output is
an Open-Collector NPN transistor which is capable of sinking a maximum of 50mA up to 15 volts DC.
The frequency of this output is set using parameters 5032, 5033, and 5034. The frequency, set in pulses
per minute, has a range of 4 to 9999 PPM. To change this frequency using the front panel pushbuttons,
parameter 5032 must be set to the new value.
Example: Parameter 5032 set for a value of 7200. (7200/60 secs = 120 pulses/sec)
The RJ45 connector pin out is as follows:
RJ45 Jack
Front
8 7 6 5 4 3 2 1
RJ45 Pin
Signal Description
1
RS232 Rx (Receive data)
2
No Connect
3
TxD+, RxD+ (+transmit/receive data line)
4
TxD-, RxD- (-transmit/receive data line)
5
Frequency generator out (Do not use for
RS232 communications)
6
Circuit Common, Signal Ground
7
Analog Input (0 to 5 VDC)
8
RS232 Tx (Transmit data)
WARNING: do Not
coNNect
the
GsdA-cm-8
dIRectly
to
the
phoNe
system
! p
eRmANeNt
dAmAGe
to
the
coNtRol
WIll
Result
.
