2.5 Bulk erase
The bulk erase function can be used for the following:
l
Erase all configuration, sets MR62e to OEM setting (sanitize board).
l
Restore to OEM default parameters.
2.5.1 Bulk erase steps
1. Set S1 DIP switches 1 and 2 to ON, and 3 and 4 to OFF.
2. Apply power to the MR62e.
3. Change DIP switches 1 or 2 to OFF within 10 seconds after LEDs 1 and 2, and LEDs 3 and 4 start flashing
alternately at a rate of 0.5 seconds. If these switches are not changed, the MR62e will power up using the OEM
default communication parameters.
4. LEDs 1 and 2 alternately flash at a 0.5 second rate while the memory is being erased.
5. Once the memory is eased, LED 1 will be on for about 3 seconds, then the MR62e will reboot.
Caution: Do not remove power during steps 3-5.
2.6 Input power
The MR62e is powered by one of two ways (jumper selected, J5):
l
Power is supplied via the Ethernet connection using PoE or PoE+.
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Local 12 V DC power supply, TB4-3 (VIN), TB4-4 (GND).
2.7 Communication wiring
Communication between the controller and the MR62e is Ethernet (10Base T/100Base-TX). It is not recommended to
connect the MR62e to a public intranet.
2.8 OSDP reader wiring
TB7 has connections for the 2-wire RS-485 OSDP communication bus and 12 V DC to power the OSDP readers. Up to
four OSDP readers are supported on the MR62e. This 12 V DC output is limited to .5 A. maximum. The OSDP reader
wiring diagram below shows the use of a 2-pair cable for data and power. If this cable cannot support the voltage/current
requirements, a 1-pair cable of sufficient gauge must be used for power. See Specifications.
The RS-485 termination jumper, J4, is only installed if the MR62e is at one end of the communication bus. Only devices at
each end of the communication bus are terminated, never install termination to more than two devices on the
communication bus.
Caution: When powering any remote device(s) by the MR62e, care must be taken not to exceed the
maximum current available. Cable gauge must also be evaluated. See Specifications for
details.
Note: For OSDP cable lengths greater than 200 ft (61 m) or EMF interference, install 120Ω +/- 2Ω resistor across
RS-485 termination ends. Data 0 and Data 1 wires for Wiegand may be reused for OSDP. However, standard
Wiegand cable may not meet RS-485 twisted pair recommendations. The reuse of cable works best on
shorter cable lengths at lower data rates.
PLT-05249, A.1 9 August 2022
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HID®Mercury™ MR62e OSDP Reader Interface
Installation and Specifications
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