Altitude Operating Conditions

The characteristics in the table below apply to the module BMX DRA 0804T for use at altitude up to 2000 m (6560 ft). When the module operates above 2000 m (6560 ft), apply additional derating.

For detailed information, refer to chapter Operating and Storage Conditions.

General Characteristics

This table presents the general characteristics for the BMX DRA 0804T module:

Module type

Relay outputs for direct current

Operating temperature

-25...70 ºC (-13...158 ºF)

Rated voltage

Direct

125 VDC

Voltage range

Direct

100...150 VDC

Maximum switching current

0.3 A

Response time

Activation

< 10 ms

Deactivation

< 10 ms

Surge current maximum

10 A capacitive

t = 10 ms

Built-in protection

Against inductive over voltage in DC modes

None. Fit a discharge diode on each output.

against short-circuits and overloads

None. Fit a fast-blow fuse of 0.5 A, 250 VDC for each relay.

Reliability

MTBF for continuous operation in hours at ambient temperature 30 °C (86 °F)

2 683 411

Power dissipation

3.17 W maximum

Field to Bus (Dielectric strength)

(at 50/60 Hz for 1 min.)

2000 V actual

Resistance of insulation

(at 500 VDC)

>10 MΩ

Power supply consumption

3.3 V

Typical

40 mA

Maximum

75 mA

24 V (All channels stay at 1)

Typical

101 mA

Maximum

137 mA

Point to point isolation

1780 VAC rms

Output current

0.3 A at 125 VDC (resistive load) 100,000 ops. minimum

0.1 A (L/R = 10 ms) 100,000 ops. minimum

Mechanical operations

20,000,000 minimum