Keyscan Inc. – Technical Guide (PC109x - 04.15)
47
Figure 33 – Terminate Floor Input Wiring EC2500B
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.
Floors 1 - 8
Floors 9 - 16
Floors 1 - 8
Floors 9 - 16
Dry Contact
Relay
N.O.
Elevator B
Call Button Status
7 of 16
Normally Open
Dry Contact
Relay
N.O.
Elevator A
Call Button Status
1 of 16
Normally Open
Dry Contact
Relay
N.O.
Elevator A
Call Button Status
12 of 16
Normally Open
Cut View of EC2500B
Elevator A - 16 Floor Status Inputs
Elevator B - 16 Floor Status Inputs
Floor monitoring inputs (separate dry contacts) provided by 3
rd
party elevator company.
Door Inputs - A
RTE Inputs - B
8
7
6
5
4
3
2
1
Common
8
7
6
5
4
3
2
1
AUX Inputs - C
8
7
6
5
4
3
2
1
Common
Common
AUX Inputs - D
16
15
14
13
12
11
10
9
Common
KI-00137E-07-11
Summary of Contents for CA250B
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