Aiphone MA-1A - Manual (Page 5)

(
coaxial cable connection
FOLD BACK
16.5 mm (5/8")
I 3 mm (1/8")
8.5 mm (3/8")
Type: 5C-2V Type: 3C-2V
Connect core conductor
to terminal.
COAXIAL CABLE REQUIREMENTS:
Use 5C-2V or 3C-2V OR RG-59/U which must
meet the following specifications;
* Both core and braided conductors must be
of copper.
* Impedance: 75 ohm.
* Pennitted closed loop DC resistance: 14
ohm.
* Permitted attenuation: 6 dB at 4MHz.
* Cable sheath size should not exceed 7.4mm
(5/16”).
When using 3C-2V, strip the insulation and
fold back the braided conductors as shown to
avoid shorting to core conductor.
■ CONNECTING WIRES
Connect braided conductors with ciamp.
(
connecting electric door
RELEASE: EL-9S)
* A separate bell transformer (AC 12V, 0.2A or more) is required to power EL-9S door release.
* Connect a pair of wires from terminals [
l
] ,
[IT]
on MA-1A room station to EL-9S by wire nuts.
* Your MA-1 A room station will operate other brands of door release. It is recommended they do not exceed 12V, 0.3A.
(
connecting extension call
SPEAKER: IBR-l)
Aiphone offers IBR-l optional speaker for signalling chime call from MA-D door station to a place remote from MA-1 A
room station. Also, the monitoring sound can be heard from IBR-l speaker.
A reply from IBR-l can not be made.
Connect a pair of wires from terminals [^ , [^ on MA-1 A room station to IBR-l speaker.
One IBR-l may be used per system.
(
connecting maw
-
b relay
BO?g
When door station must be installed in a place where a caller is strongly backlighted, an additional light must be installed in
conjunction with MAW-B relay box to illuminate caller from the front.
Connect white and blue leads of MAW-B to terminals of MA-1 A by wire nuts. Connect orange wires of MAW-B
to the light switch. Incorrect wiring will cause permanent damage to MAW-B relay box.
* Specifications;
DC-24V. Extended from PS-24M power supply.
Use incandescent lamps for general lighting service of less than lOOW.
2-wires (polarized) between MAW-B and MA-1 A room station.
2-wires (polarized) between MAW-B and PS-24M power supply.
Wiring distance: Up to 80 m (26') with 0.65 mm dia. (22 AWG) wires between MAW-B and PS-24M.
Power source:
Relay contact capacity:
Wiring:
5
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