Terminate Reader Wiring At Acu; Figure 33 - Terminate Floor Input Wiring Ec2500B - Keyscan CA250B Technical Instructions

Cut View of EC2500B
Elevator A - 16 Floor Status Inputs
Floors 1 - 8
Door Inputs - A
1 2 3 4 5
Elevator A
Call Button Status
Normally Open
Dry Contact
Relay
Floor monitoring inputs (separate dry contacts) provided by 3
KI-00137E-07-11

Terminate Reader Wiring at ACU

For readers, use six (6) conductors 22 AWG shielded cable or a cable with overall shielding.
For elevator readers or current demanding readers, such as the Indala PX620 or the HID5375, use six (6)
conductors 18 AWG shielded cable.
The shielding wire must be connected to the earth ground lug at the ACU, isolated and taped at the reader.
The maximum reader distance is 500 feet (152.4 m) from the ACU when transmitting a Wiegand signal. If the
distance is greater than 500 feet (152.4 m), install one WIEEX2 per reader, which extends the distance to
4000 feet (1219.2 m). See Appendix D – WIEEX2.
Reader Wiring
 Red – Positive DC power. For readers that draw more current, connect the red wire directly to the power
supply.
 Black – Ground (GND)
 Brown – Light emitting diode (LED) on reader
 Green – Data output bit 0
 White – Data output bit 1
 Blue – Optional pre-alert (reader beeper)
For specific reader wiring review the appendices listed in the Table of Contents.
Keyscan Inc. – Technical Guide (PC109x - 04.15)
Figure 33 – Terminate Floor Input Wiring EC2500B
Floors 9 - 16
Common RTE Inputs - B
6 7 8 1 2 3 4 5 6 7 8
Elevator A
Call Button Status
1 of 16 12 of 16
Normally Open
Dry Contact
N.O.
Relay
Elevator B - 16 Floor Status Inputs
Floors 1 - 8
Common AUX Inputs - C Common
1 2 3 4 5 6 7 8
Elevator B
Call Button Status
Normally Open
Dry Contact
N.O.
Relay
rd
party elevator company.
Floors 9 - 16
AUX Inputs - D Common
9 10 11 12 13 14 15 16
7 of 16
N.O.
47