ES-7341 Rev.4

BA8BM-DAC8

Remote Control / Supervisory System BA8 Series

DISCRETE INPUT & RELAY OUTPUT MODULE, 4 points each

(BACnet MS/TP)

MODEL: BA8BM-DAC8-M2

ORDERING INFORMATION

• Code number: BA8BM-DAC8-M2

COMMUNICATION TYPE

BM: BACnet MS/TP

I/O TYPE

DAC8: 4-point dry contact inputs, 4-point relay contact outputs

POWER INPUT

AC Power
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
 47 – 66 Hz)

GENERAL SPECIFICATIONS

Connection
  BACnet MS/TP: Tension clamp terminal block
  I/O: Tension clamp terminal block
  Power input: Tension clamp terminal block
Housing material: Flame-resistant resin (gray)
Isolation: BACnet MS/TP to contact input to contact output to power to FE
Output Mode: Settable with side DIP switch
Simulated I/O: Settable with front DIP switch
Output: Settable with front DIP switch 
Status indicator LEDs: PWR, RUN, ERR, SD, RD (Refer to the instruction manual)
I/O status indicator LEDs: Green LED with I/O ON

BACnet COMMUNICATION

Applicable standard:
ANSI/ASHRAE Standard 135-2010
BACnet stansdard device profile:
BACnet Application Specific Controller (B-ASC)

Number of supported object: 9 max.

Supported object type:
Binary Input, Binary Output, Device, Accumulator

Supported BIBBs:
・Data Sharing
  Read Property-B (DS-RP-B)
  Read Property Multiple-B (DS-RPM-B)
  Write Property-B (DS-WP-B)
  Write Property Multiple-B (DS-WPM-B)
  COV-B (DS-COV-B)
・Device Management
  Dynamic Device Binding-B (DM-DDB-B)
  Dynamic Object Binding-B (DM-DOB-B)
  Device Comunication Control-B (DM-DCC-B)
  Time Synchronization-B (DM-TS-B)
  UTC Time Synchronization-B (DM-UTC-B)

Supported data link layer:
MS/TP master (Clause9)

Supported character code:
ISO 10646 (UTF-8)

■ BACnet MS/TP
MAC address: 00 to 7F with rotary switch
Baud rate: 9600/19.2 k/38.4 k/76.8 kbps
(with rotary switch)
Standard: Conforms to TIA/EIA-485-A
Transmission distance: 1500 meters max.
Transmission media: AWG22 (two shielded twist pair cables)
Character: 8 data bits, no parity, 1 stop bit
Terminating resistor: Built-in (ON/OFF setting with DIP switch, factory setting: OFF)

INPUT SPECIFICATIONS

Number of input: 4
Isolation: Optical isolator
Input resistance: Approx. 4.4 kΩ
Common: 1 common per 4 points (4 terminals)
Contact detecting: 24 V DC ±10%
ON voltage/ON current: ≤ 12 V, ≥ 2.5 mA
OFF voltage/OFF current: ≥ 17 V, ≤ 1.5 mA
ON delay time: ≤ 2.0 msec.
OFF delay time: ≤ 2.0 msec.
ON detecting time: Approx. 5.0 msec.

■ PULSE INPUT SPECIFICATION
Maximum frequency: 100 Hz
(ON/OFF time ≥ 5 msec.)
Totalized pulse range: 0 - 4,294,967,295
Max. totalized pulse range: 1,000 - 4,294,967,295
(Factory setting: 9,999,999)
Count at overflow: Reset and restart at ‘0'.

OUTPUT SPECIFICATIONS

Number of output: 4 points
Common: 1 common per 1 point
Rated load: 250 V AC @ 2A, 30 V DC @ 2A
Maximum switching voltage: 250 V AC, 30 V DC
Maximum switching power: 500 VA (AC), 60 W (DC)
Minimum applicable load: 24 V DC @ 5 mA
Relay life
Mechanical: 2 × 107 cycles (180 cycles per min.)
When driving an inductive load, external contact protection and noise quenching recommended.
ON delay time: ≤ 10 msec.
OFF delay time: ≤ 10 msec.
Output data update time: Approx. 300 msec.

INSTALLATION

Power consumption
•AC:
 Approx. 5 VA at 100 V
 Approx. 7 VA at 200 V
 Approx. 8 VA at 240 V
Operating temperature: 0 to 50°C (32 to 122°F)
Operating humidity: 10 to 90 %RH (non-condensing)
Atmosphere: No corrosive gas or heavy dust
Mounting: DIN rail
Weight: 350 g (0.77 lb)

PERFORMANCE

Battery backup: RTC (for 7 days max.)
Calendar clock accuracy: Monthly deviation 2 minutes at 25°C
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute (BACnet MS/TP to contact input to contact output to power to FE)

STANDARDS & APPROVALS

EU conformity:
EMC Directive  
  EMI EN 61000-6-4
  EMS EN 61000-6-2
Low Voltage Directive 
 EN 61010-1, EN 61010-2-201
 Measurement Category II (contact output)
 Installation Category II (power input)
 Pollution Degree 2
 BACnet MS/TP to contact input to contact output to power:
 Reinforced insulation (300 V)
RoHS Directive

EXTERNAL VIEW

CONNECTION DIAGRAMS

Tension clamp terminal blocks are used for I/O, power input and connection.

■ COMMON SPECIFICATION
Applicable wire size: 0.2 − 1.5 mm2; stripped length 10 mm
Recommended solderless terminal
• AI0,25-10BU 0.25 mm2 (Phoenix Contact)
• AI0,34-10TQ 0.34 mm2 (Phoenix Contact)
• AI0,5-10WH 0.5 mm2 (Phoenix Contact)
• AI0,75-10GY 0.75 mm2 (Phoenix Contact)
• A1-10 1.0 mm2 (Phoenix Contact)
• A1,5-10 1.5 mm2 (Phoenix Contact)

SUPPORTED BACnet PROPERTY

EXTERNAL DIMENSIONS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

Note: In order to improve EMC performance, bond the FE terminal to ground.
Caution: FE terminal is NOT a protective conductor terminal.