Pinnacle Systems MG - Manual (Page 13)

error will occur (this detects an open or a contact weld).
When the light curtain goes GREEN it will record the
opening of the external relay. If the light curtain goes
RED again without ever sensing the opening of the
external relays, an error will occur (this detects a short
or failed relay) and cause the light curtain to lock up and
must be powered down to clear the error. A Red LED
(D14) will light up when external contact is closed (see
Installation Procedures, “Controller Module Setup.” )
Captive Contact Definition: one pole inside the relay
always maintains the identical position to the other pole.
(i.e., if one pole contact welds closed, the other pole
remains closed even when the relay coil is de-energized.
NOTE: Use shielded cable for relay check inputs.
Standard Output Contacts (K1 & K2)
Description: Both K1 and K2 relays each have there
own relay driving circuitry and relay checking circuitry
and are fully independent of each other having there
own output terminals. The MicroGuard checks the
position of all the relays and shuts them all down if any
are found in the wrong position. In order for the system
to remain safe during a single failure of one relay, you
must be using the relays such that the second relay can
still shut the system down if the first one ever fails. This
can either be by wiring both relays in series or using both
relays separately in two control circuits.
Usage: K1 and K2 have separate outputs and both
must be used either together in series with your stop
circuit or separately in two stop circuits. K1 and K2
outputs are N.O. and close when the curtain is GREEN
only.
Fault Relay Output
Description: It will not change states due to curtain
blockage.
Application: Can be used to signal a remote station
of an unexpected machine shut down.
Usage: The fault relay provides a dry contact that is
open when good and closed when a fault or loss of
power occurs. Use the alarm contacts on the power
supply board. The dry contact is isolated up to 120VAC.
To Actviate: Install jumper on J17 (bottom board)
top 2 pins. Install jumper on J9 (door board) between
Latch and Close pins (left side). This feature will disable
remote latching. D21 will light up to show the relay is
active.
Standard Features
Metal Box Controller Module
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