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Key Options
8-5 Applications (cont.)
8-5-2 Application of External Contact Interface Module (cont.)
■ Introduction of External Contact Interface Module
External Contact Interface Configuration
Using the Technician Utilities Tool (TUT) or the remote control, configure indoor unit options as required by customer application.
Refer to Table 1, Figure 3, and the configuration section of the indoor unit installation manual.
Table 1. Option settings for the module as an external contact interface
Using the Technician Utilities Tool (TUT) or the remote control, configure indoor unit options as required by customer application.
Refer to Table 1, Figure 3, and the configurat.
Option
setting mode: Digit 2=2
Digit 14
Digit 15
1. If Digit 14 terminals 5, 6
• Option setting 0 has no function.
• Option setting 1 will enable an auxiliary contact to enable the indoor unit on or off.
• Option 2 will enable an auxiliary contact to enable the indoor unit off.
The indoor unit will require reset to release and re-enable the connected indoor unit.
2. If Digit 15 terminals 3, 4
• If option setting 0, then the auxiliary device shall enable upon call for thermal heating (or cooling) to the indoor unit. Unit shall dis-
able when indoor unit ceases thermal operation and returns to standby mode.
• If option 1, then the auxiliary device shall enable upon application of power to the indoor unit, and shall remain enabled until power
is removed.
3. If Digit 15 terminals 1, 2
• If option setting 0 or 1, when power is applied, contacts are normally closed. If error code occurs, contacts open, breaking the circuit
for the external device.
Samsung Electronics
Option
(a)
setting
"0"
"1"
"2"
"0"
"1"
Figure 3. External contact interface module wiring diagram
Terminals 5,6
(b)
Terminals 3,4
No function
On/Off control
Off control
Thermo On/Off
status (On=closed)
-
Operation On/Off
status (On=closed)
Numbers correspond to inputs and
outputs as described in Table 1.
Note: Do not directly connect module to external
contact. Use correctly sized external relays.
Terminals 1,2
-
Error status
(normally closed)
296
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