Functinal Devices RIBTWLB-7-BC Enclosed BACnet MS/TP Network Relay Device Instructions

Table of Contents

Functinal Devices RIBTWLB-7-BC Encl-

UL 864 Fan-Safety-Circuit Mode (Factory Default)

Operates as AND function. When binary inputs BI 1 – BI 6 are closed, Binary output relay BO 1 will close. Opening any of the 6 binary inputs (as in the case of an alarm condition) will open BO 1 again.
Binary output relay BO 2 is bound to binary input BI 7 for applications involving a Fan Current Status contact. When BI 7 is closed, BO 2 will activate. BO 2 indicator will illuminate when BO 2 is active and BI 7 indicator will illuminate when BI 7 is closed.

Two Binary Outputs (2 SPDT relays + Override)

Relay Rating, BO 1-1:
3 Amp Max @ 24 Vac/dc
Relay Rating, BO 1-2:
10 Amp Resistive @ 30 Vdc
10 Amp General Use @ 277 Vac
1/2 HP @ 120/240 Vac
Relay Rating, BO 2:
20 Amp Resistive @ 277 Vac
5 Amp @ 480 Vac
20 Amp Ballast @ 277 Vac
16 Amp Electronic Ballast @ 277 Vac 1 HP @ 120 Vac
2 HP @ 277 Vac

Functinal Devices RIBTWLB-7-BC Encl- fig 1

Relay Override is selected via DIP switches.
Red LED is on when corresponding Relay is on.
The BO1 and BO2 DIP switch override status can read by way of Proprietary Properties DIP_SWBO1 and DIP SW_BO2 (No. 277005) in BO1 and BO2.
The Priority level of the DIP switch function can be set by way of Proprietary Properties DIP_SW_Priority_BO1 and DIP_SW_Priority_BO2 (No. 277004) in BO1 and BO2.

Functinal Devices RIBTWLB-7-BC Encl- fig 4 Binary inputs can be N/C (default) or N/O depending on the Polarity setting in the respective BI object.

Open is alarm condition for N/C.

Binary Input Override

Binary Input Latch

Binary inputs can be latched with Latch-Select DIP switches on board.
Latched binary inputs will stay in alarm condition once triggered until input is reset.
Latch can be reset by local pushbutton, power cycle, or by setting Present_Value True (1) in Binary Value BV1 (automatically returns to 0 in preparation for future resets.)
Present Latch-Select DIP switch settings for specific binary inputs can be read by way of Proprietary Property Latch_Enabled (No. 277008) in respective BI object.
Latched status (if input is presently latched or not) of specific binary inputs can be read by way of Proprietary Property Input_Latched (No. 277009) in respective BI object.
Latching Binary Inputs for Fan-Safety-Circuit mode only.

Connect to terminal pair 24Vac/dc Input
When connecting 24Vac to both the RIB(s) and a halfwave device, damage to device can occur.

Option 1: Use seperate transformer for each device, or an isolated 24Vdc power supply.

Option 2: Add diode between devices, see diagram.

Functinal Devices RIBTWLB-7-BC Encl- fig 5

Optional End of Line Resistor (EOL) Included.
Basic Data
• Network Media: Twisted Pair 22-24AWG, shielded recommended
• Terminations: Functional Devices product installed at both ends of the MS/TP network – Use 120 Ω end of line resistors. All other cases – Follow instructions from the device installed at the end of the MS/TP network.
• Polarity: Network is polarity sensitive
• Baud Rate: 9600, 19200, 38400, 57600, 76800, 115200 (DIP Switch Selectable)

Functinal Devices RIBTWLB-7-BC Encl- fig 6

Address selected via DIP Sw 1 – 7 , see Bulletin B2028

BI 7 and BO 2 Binding Settings
• Binary input BI 7 can be unbound from binary out relay BO 2 by way of Proprietary Property Bind_BI7 ( No. 277006) in BO2.
• Priority level of the Bind function can be set by way of Proprietary Property Bind_BI7_Priority (No. 277007) in BO 2.
I/O Board Mode
• I/O Board mode can be enabled temporarily for troubleshooting purposes by way of Proprietary Property AND_Function_Enable (No. 277001).
• Operates as a logic board with 7 binary inputs and 2 binary output relays. Allows user to test individual inputs and outputs.

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