Honeywell Farenhyt ECS Series - 7: SBUS Wiring; 8: Setting the ECS-DUAL50 W Backup Mode

52 ECS Series Manual — P/N 151455:H 2/15/2022
ECS Device Installation Installing the ECS-DUAL50W
4.7.7 SBUS Wiring
This section contains information on how to connect ECS-DUAL50Ws (up to 8 for IFP-100ECS, ECS-300ECS, and IFP-1000ECS or up to
16 for the IFP-2000ECS or ECS-2100ECS) onto the main control SBUS. Refer to Section 4 of the FACP Installation manual for SBUS spec-
ifications. Wire the SBUS to either the ECS-VCM or SBUS Out terminals on the FACP as shown in Figure 4.61.
See Section 4.11 for information on setting SBUS addresses.
4.7.8 Setting the ECS-DUAL50W Backup Mode
When the ECS-DUAL50W is connected to an IFP-100ECS or IFP-1000ECS version 13 or prior, see Figure 4.62 below to set the amplifier
mode. If using version 14 or later, the mode is set using HFSS (Honeywell Fire Software Suite) and the DIP switch mode selector is ignored.
When the ECS-DUAL50W is connected to an IFP-2000ECS, IFP-300ECS, or the IFP-2100ECS, the mode is set using the HFSS Software
Suite and the DIP switch mode selector is ignored.
The amplifier modes are as follows:
• 50 Watt with backup - Amp A powers audio circuits 1 - 8. Amp A is backed up by onboard Amp B. (Default, DIP setting at position 2).
• 100 Watt with no backup - Amp A powers audio circuits 1 - 4. Amp B powers audio circuits 5 - 8. There is no backup.
(DIP setting at position 1).
• 100 Watt with backup (requires ECS-50WBU) - Amp A powers audio circuits 1 - 4. Amp B powers audio circuits 5 - 8. The ECS-
50WBU will back up Amp A or Amp B but never both. (DIP setting at position 3).
If the ECS-DUAL50W is connected to an IFP-2000ECS or ECS-2100ECS system and configured to operate in a dual channel setup, Amp A
and/or Amp B is not restricted to which audio circuits it can power. However, both can never power the same audio circuit.
-IN+ -OUT+
-IN+ -OUT+
VBUS1
VBUS2
Vout1-
Vout1+ Vin1- Vin1+
Vout2-
Vout2+ Vin2- Vin2+
Vout1-
Vout1+ Vin1- Vin1+
Vout2-
Vout2+ Vin2- Vin2+
ECS-DUAL50W
ECS-NVCM
ECS-DUAL50W
supervised,
power-limited
Class B
to next
ECS-DUAL50W
UL-listed 15kΩ
EOL at last device
on the VBUS
Figure 4.60 VBUS2 Wiring for Dual Channel for ECS-NVCM
SBUS
VBUS IN 2
VBUS OUT
2
+
+
+
A
B
B A + -B A + -
supervised,
power-limited
Class B
ECS-VCM
or
SBUS (Out) on FACP
Figure 4.61 Connecting ECS-DUAL50W to the SBUS
to next
ECS-DUAL50W
ECS-DUAL50W
ECS-DUAL50W