Controlled Products Systems Group MEL-K20 - Manual (Page 3)

P.O. Box 159 • West Grove, PA 19390 • 800-220-3343 • 610-869-4422 • Fax: 610-869-4423 • www.milleredge.com
6809 South Harl Ave., Suite A • Tempe, AZ 85283 • 800-887-3343 • 480-755-3565 • Fax: 480-755-3558
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Specifications and Controls: Transmitter Unit
Addressing Switches: Addressing codes allow for multiple transmitters to operate on the same frequency in close
proximity. See installation section of this manual.
Frequency: Multiple frequency modules available. Standard frequency: 315 MHz.303 MHz upon optional request.
Indicator Lights- Tx:
Green Led: Tx Data, Flashes upon activation and release of the external safety device to indicate
transmission.
Low Battery: Red Led. Flashes as a warning when the battery voltage is below 2.4v. All transmission ceases below 2.3v
Mounting: 4 corner screws Type as needed.
Power Source: Batteries: 2 AA, 1.5v Alkaline or Lithium*
Dimensions: 1.80” w x 4.78.” h x 1.75”d
*Recommended for extended life in prolonged cold environments. Life expectancy: 1 yr.
RF Module: Plug in module with integral helical antenna.
Termination Sw.: Selects termination type of the monitored device as 10K resistive or 9v diode-capacitor.
Test Button: Momentary push button – Forces the transmission of the transmitter's address and sensor status.
Loads an address change when the addressing switches are altered.
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Specifications and Controls: Receiver Unit
Power: 12v-24v ac/dc nominal (8-30v max). Power may be supplied from the operator or alternately from an external supply.
Cable Entrance: Rubber seals for .15” - .2” diameter cables.
Cable Connections: Screw clamp type terminal blocks for 22 -24 awg wire.
Addressing: Group Switch: 2 position slide switch, selectable as “0” or “1”.
Address Switch: Selectable from 0 – 9 and A – F (See Address setting in the TX setup section.)
Dimensions: 3.70” w x 5.12.” h x 2.20”d
Indicator Lights - Rx:
Address Valid: Yellow Led
PE Alarm: Red Led: Indicates Photo-eye pulse stream loss
: Flashing indicates a termination error
SE Alarm: Green Led: Indicates Safety device activation
K.O. Switch Active: Green Led
Low Battery: Green Led–Flashing: Tx battery falls below 2.4v
Green Led–Steady: Tx battery falls below 2.3v
Outputs:
PE Output: Pulse stream output compatible with all UL-325/2010 listed commercial operators. (Check Operator Listing)
SE Output: SPDT relay contacts, NO, NC, and Com outputs. (See Termination Type)
The pulse stream stops and the relay activates when any of the following occurs:
1. Safety device activation
2. Open or unconnected safety device
3. Bad or missing safety device termination
4. Low Battery
5. Loss of radio signal or ping loss
Termination Type: 10K resistor or 9.1v Diode/Cap. Selectable by PCB Jumper/Header
KO Output: SPDT relay contacts, NO, NC, and Com outputs
Low Battery: SPDT relay contacts, NO, NC, and Com outputs
Alarm Power Switch: Provides either dry contacts or +5vdc @ 20 ma. Max on the relay contacts.
Position 0: Relay dry contacts
Position 1: 5v @ 20 ma supplied on relay NC