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3
System operating range
The system SH-7 is designed for a large operating range of many hundred meters. Walls including steel reinforced concrete can be
penetrated. The maximum range can be achieved under optimum conditions and by line-of-sight contact between transmitter and
receiver without disruption by external high frequency disturbances.
The following are possible causes that could reduce range of operation:
Obstructing buildings, vegetation or other factors will substantially reduce the operating range.
The distance between the antenna and the operator's body or other conducting objects (e.g. Earth) may influence the working
range.
Background "electrical noise" could be relatively high so that the signal-to-noise-ratio may decease and therewith the operating
range. Also other devices, with similar operating frequency, operated in the neighbourhood of the receiver may reduce the
sensitivity.
Operating the receiver adjacent to badly shielded electronic components (e.g. PC's) that can produce electromagnetic distortion,
may severely reduce the range of operation and could result in intermittent operation.
Adjustable and open components should not be adjusted or modified.
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Description
Prior to powering on the receiver, configure first the function that the receiver should execute based on the sender commands.
Delaytime for Key-function (Jumper 1)
If jumper 1 is set, the corresponding relay will stay closed with a delay time of 100ms as long as the transmitter key remains active.
Installing the receiver in an RF-disturbed area could result in a chattering (relay contact bounce) during operation if the operating button
is pressed for a longer period. To minimize this effect, all instructions received from a transmitter could be extended to 500ms by
removing jumper 1. The receiver then will operate with delayed-action correctly under RF disturbance.
Key- or Toggle-function (Jumper 2)
If jumper 2 is inserted, the relays will stay closed as long as the transmitter key remains active (Key-function). Delay-time set by
jumper 1.
If jumper 2 is removed, it is possible to switch on/off the relays. Each signal command puts the relay into the opposite state. The delay-
time set with jumper 1 is considered to be a „dead time" between the switching processes. While the timer is running, no new command
is executed.
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Installation
Using the external fixing lugs, the case of SHR-7 L3 can be wall mounted. Do not remove the electronic board.
Open the cable entries using a suitable piercing tool. To avoid damage to electronics, only entries on the screw-terminal side should
be used.
To open the enclosure cover, carefully insert a screwdriver into the slot on side frames.
Connect the power cables for 230V~/50Hz into the correct screw-terminals.
Max. cross-section of wires to be used is limited to 1.5 mm²
The connection wires are to be stripped to a maximum of 4 mm. (To avoid accidental contact)
Connect the wires to devices into screw-terminals for changeover contacts NO/CC/NC as per attached figure.
All wiring should be installed neatly and rectilinearly. Powered wiring must not be mounted over the electronic board. Care must be
taken that wiring is not squeezed or damaged.
Ensure that the antenna is mounted as far as possible away from power wiring and is not in contact with any powered part
particularly in the terminal connection area.
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Coding
After the first connection to the mains each receiver SHR-7 L3 could be programmed (taught) with 2 individual address codes with
transmission-key for each relay-output. For programming the code and transmitter-keys, perform exactly as follows:
Set the transmitter (Series SH-7 C) to be used to your individual radio-code.
Briefly press one of 3 "learn" buttons (e.g. S1 for Relais K1) . Flashing LED indicates active in learning mode.
On the transmitter press the button selected for your application (e.g. Key 1 or Key 2+3 together) until the LED flash rate increases.
The button and radio-code is stored in the receiver. LED continues flashing until the storing procedure is complete.
Check for error free operation of the receiver by pressing the transmitter button(s) again when LED is extinguished. If the address is
learned correctly, the clicking operation of the relay will be audible.
Repeat the procedure for the next relays.
Up to 6 codes could be learned by this way (3x2 per relay). Therefore an older code could be deleted by learning the new one twice.
The learn mode is completed automatically within approx. 60 sec. In case of error the teach mode may be interrupted by pressing 2 of
the buttons simultaneously. Pressing learn mode buttons 1 and 3 for a minimum of 3 sec. will delete all stored data. In normal operation
the LED illuminates if an understandable radio signal is received by the SHR-7 L3, even if it is not a previously learned signal (HF-
Busy).
In case the programmed transmitter-code or transmitter itself should be changed, it is a requirement that the receiver also be
programmed with the new code. Operation of the receiver with an unlimited no. off transmitters is possible by coding the internal tri-dip-
switches off all transmitters to the same code.
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