Dynacord DMM 4650 owner manual Connections, Control levels and currents

CONNECTIONS

CONTROL INPUTS AND CONTROL OUTPUTS PORTS A - D

General:

Operation see page 21 (PORTS C, D are optional)

Each of the 4 ports (A, B, C, D) have 4 inputs and 4 outputs and a power source for supplying floating control keys or contacts.

The inputs and outputs are galvanic insulated from the DMM 4650 and the adjacent control lines. Port A has an additional fault output (relay contact) which, during normal operation, is always closed.

The DMM 4650 provides port connection through 25-pole sub-D connectors (male).

Pin assignment for ports A, B, C, D: @ corresponds to A, B, C, D

pin	name	pin	name
1	- Batt.	7-20	OUT @1
14	- Batt.	8-21	OUT @2
2-15	INP @1	9-22	OUT @3
3-16	INP @2	10-23	OUT @4
4-17	INP @3	11	- Batt.
5-18	INP @4	24	- Batt.
6	- Batt.	12-25	Fault Out !!Only PORT A
19	- Batt.	13	+ Batt. (max. 90 mA)

Control levels and currents:

Power source -Batt. / +Batt. corresponds to a supply voltage of (20V - 31V) of the DMM 4650. For current limitation (fuse), a PTC resistor (positive temperature coefficient resistor) is provided at the +Batt connection of each port.

Inputs:

The polarity of the control inputs is random.

L	=	low corresponds to	UINP	< ± 5V (0-5V)	IINP	< 1mA (0-1mA)
H	=	high corresponds to	UINP	> ± 10V (10-31V)	IINP	> 1.8mA (1.8-7mA)
		max. Uinp = ±31V

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