Praktika T-02(K) turnstile
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When authorized card is presented the card collector transmits a signal
(see. article 6.3.1) and unlocks the OD for 5 seconds. During this time
interval other cards are not accepted. When a signal (a closing between
Pass Ok and GND), confirming the passage, is received, the card collector
switches into standby mode and can collect the next card. For these
reasons, the connection of this contact set is essential to the system
capacity.
6.4. Connecting ACS controller
Block diagrams of ACS controller with the use of card collector are
shown in Appendix 2.
Connection of ACS controller to the card collector provided by three
contact sets: "Take Card-GND" - the signal authorizing collection of guest
card, "Free Pass-GND" – the signal authorizing passage and "Card Inside"
– the signal confirming card collection. Contacts location is shown in Fig.
13.
6.4.1. "Take Card-GND" contact set (signal for collection of guest
card).
•
Take Card and GND contacts. Pulse input that receives a signal from
ACS controller allowing the collection of the card (guest pass). The
operating principle is based on normally open contacts. Passage is detected
by a contact closure for at least 200 ms.
The signal for collection shall be transmitted no sooner and no later
than 2 seconds after putting the card into the card hole of the card
