GSE Agrifeed 5500, Справочное руководство

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2.4.4 Remote Key Connection
A remote key may be connected to the Agrifeed 5500 to provide remote
activation of TARE, ZERO, PRINT/ADVANCE and PRINT & TARE
functions.
The connection for the remote key input is between pin 4 of the power
connector and ground (pin 2). A two-conductor cable between 28 and 20
AWG is recommended. The input requires a contact closure from a
push-button switch, a mechanical relay contact or other such device.
Do NOT apply an external voltage to the remote key terminal! Only a
contact closure is required to activate the remote key input.
The open circuit voltage across the Remote Key pins is +5 VDC. A
closed switch will conduct about 0.25 mA. Therefore, a low-voltage
switch with gold-plated or mercury wetted contacts is recommended.
The input may also be activated remotely with a RF remote key. A
minimum contact duration of 100 ms is required. Once invoked, the
selected remote key operation will not repeat until the contact is released
and closed again.
2.4.5 Power Connection
The Agrifeed 5500 is powered by an external 10.5-16 VDC power
source. The power supply should have a minimum current rating of
800mA.
Table 5 shows the power connector pin locations.
Table 5: Power Connector Pin Chart
Figure 7: Remote Key Connection
Pin 1 Pin 2 Pin 3 Pin 4 Range
DC
+
GND
ALARM
OUT REMOTE
IN 10.5-16
VDC