Praktika T-04(K) speedgate
22
AP and STOP inputs operate only in a potential mode (as potential
and constant), i.e. as long as the input is closed on GND contact the
speedgate operates in corresponding mode. When contacts are open -
speedgate switches to the "Stop" mode irrespective to the mode of
operation that was used before ACS operation.
LEFT and RIGHT inputs can operate both in potential and in pulse
modes (responding upon GND contact closure). Pulse mode is set on
default.
In order to switch to potential mode set J1 jumper (Fig. 8). And J1 shall be
set at both motherboards of decided passage. In this case the mode of left /
right passage turns on only during the control signal to LEFT / RIGHT
inputs. Mode of free passage can be set by control signals to both inputs
simultaneously. Priorities of LEFT and RIGHT inputs at the switch to the
pulse mode remain unchanged.
Motherboard contains two relay outputs for ACS operating on the
principle of "dry contacts» - Pass Okl and Pass Ok2. NO and COMM -
normally open connection, NC and COMM - normally closed connection.
Activation of one of the contact sets suggests the passage in the
corresponding direction (PassOk1 - right or left, PassOk2 - left or right).
Activation of corresponding relay depends on the location of speedgate
and determined by an experiment. Related LED indicators turn on, either
D1 for right or D2 for left, depending on the direction of passage.
Motherboard contains relay output for ACS operating on the principle of
"dry contacts» - Status. NO and COMM - normally open connection, its
contacts close when the speedgate switches to "AP" and D3 LED
indicator lights up.
