PD 621 6 Channel Digital I/O (Current Sink)

Specific Features

The PD 621 has six general-purpose digital channels, which are normally all configured for either input or output. When configured as an input device, the BM 005 Base Module is used. When configured as an output device, BM 006 is used. Alternatively, by configuring channels 1-4 as inputs and channels 5 and 6 as outputs, the latter can use the two built in relays in BM 004). All of these combinations provide easy-to-use DIN-rail mounting.

· Individually Configurable Digital I/Os for nominal 24 volts signals and 1 amp (2 Amp) loads.

· Built in input and output functions.

· Autonomous counting to 200 Hz

· Load current measurement

· Overload/Underload protection and Alarming.

· Advanced internal self testing.

· Wide power supply range.

· Wide temperature range.

· 2 LEDs for power On and Error indication.

· 1 LED for each digital channel.

PD 621 Block Schematic

The diagram shows the I/O circuits and connection possibilities for a PD 621

(see wiring diagram)

Channel Structure

The PD 621 consists of 7 channels as shown in the table.

Channel No.	Channel Name	Channel Description
0	Service	Device Ident.,Address and Config.
1	Digital_IO_1	General purpose Digital Input or Output
2	Digital_IO_2	General purpose Digital Input or Output
3	Digital_IO_3	General purpose Digital Input or Output
4	Digital_IO_4	General purpose Digital Input or Output
5	Digital_IO_5	General purpose Digital Input or Output
6	Digital_IO_6	General purpose Digital Input or Output

Electrical Specifications

*Power supply*
Power supply DC:		Nom. min. max.		24.0 V 18.0 V 32.0 V
Ripple:		max.		5%

*Power consumption @ 24Vdc*
All outputs/inputs = ON		max.		45 mA
All outputs/inputs = OFF		max.		30 mA
Current requirement at power up:		max.		60 mA

*Digital Input*
Input voltage at ON:		<		3 V
Input voltage at OFF:		>		9 V
Input hysteresis:		min.		0.3 V
Input current at ON:		max.		3.4 mA
Input frequency:		max.		200 Hz

*Digital Output*
Start current (Duration max 2 sec.)		max.		2 A *)
Load current at ON (Sink only)		max.		1 A
Leak current at OFF		max.		500 μA
Short circuit cutoff delaytime (current > 2 A)		max.		100 μsec
Oneshot and Dutycycle resolution				15.625 msec

) Enabled by setting MaxCurrent* = 2 A, and MinMaxCurPreset = 2 seconds. By default, MaxCurrent = 1.0 and MinMaxCurTimer = 0.0.
*Load current measurements*
Accuracy:	Min.		2.5 %, +/-10 mA
Resolution:			2.4 mA
Repeatability:	Min.		1 %, +/- 10 mA
Current measurement update time:

*Temperature*
Operating temperature	-25 °C - 70 °C
Storage temperature	-40 °C - 85 °C

*Humidity*
Relative humidity:	max. 95%

*EMC*
EN 61000-6-2, EN 61000-6-3

*Vibration*
Test method: IEC 60068-2-6
Frequency range:	2-100 Hz
Frequency / amplitude:	2-10 Hz : +/- 5.0 mm
	10-100 Hz: +/- 2g
Sweep rate:	max. 1 octave/min
Number of axes:	3 mutually perpendicular

PD 621 6 Channel Digital I/O (Current Sink)

Specific Features

PD 621 Block Schematic

Channel Structure

Electrical Specifications

Mechanical Details

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