February, 2018 eMAX-MR52 Series 3 - Manual Page 8 of 13
5. Alarm Contact Wiring:
The eMAX-MR52-S3 includes 8 inputs that are typically used to monitor door position, request to exit devices,
or alarm contacts. Input circuits can be configured as:
•Unsupervised alarm (2 states); reporting as open or closed contact.
•Supervised alarm (6 states); reporting as open or closed contact, open circuit, shorted circuit, grounded
circuit *, or foreign voltage*.
A supervised input circuit requires adding two (2) EOL resistors with value of 1k ohm, 1% to the circuit to
facilitate proper monitoring and reporting. The Resistors should be located as close to the sensor as
possible. Custom end of line (EOL) resistances may be configured via the host software.
* Grounded and foreign voltage states are not a requirement of UL 294 and therefore not verified by UL.
The input circuit wiring configurations shown are supported but may not be typical.
6. Inputs for Cabinet Tamper/Power Fault:
Input CT and input BA are used for monitoring cabinet tamper and power failure with normally closed contacts.
These two inputs are for contact closure monitoring only, and do not use EOL resistor(s). If these inputs are
not used, install a short jumper wire across the input to indicate a safe condition.
1K,1%
1K,1%
1K,1%
1K,1%
IN1 IN2 IN3 IN4
Standard Supervised Circuit,
Normally Closed Contact
Standard Supervised Circuit,
Normally Open Contact
Unsupervised Circuit,
Normally Open Contact
Unsupervised Circuit,
Normally Closed Contact
