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Configuring the ifma – Red Lion IFMA User Manual

Page 4

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4

COMM.

INPUT

EXT. VDC+

EXT. VDC-

8

9

*

C

B

A

OUTPUT

-EF

SENSOR

COMM.

INPUT

EXT. VDC+

EXT. VDC-

8

9

*

MODELS

PSA-1

SENSOR

PSA-2

RLC

BLU

BLK OR BRN

PNP O.C.

OUTPUT

SENSOR

OUTPUT
COMM.

+12V

COMM.

INPUT

EXT. VDC+

EXT. VDC-

8

9

*

NPN O.C.

OUTPUT

SENSOR

WHT

BLK

RED

COMM.

INPUT

EXT. VDC+

EXT. VDC-

8

9

*

CONFIGURING THE IFMA

To begin set-up, place DIP switch 4 to the on (up) position. DIP switches 5, 6, and 7 access unit configuration settings.

Upon entry to a set-up parameter, the Input LED blinks the current numerical value of a setting at a 1 Hz rate. A setting
of “1” is indicated by one blink (½ sec on, ½ sec off), through a setting of “9”, which is indicated by nine blinks. A setting
of “0” is indicated by a single short flash (40 msec on, 1 sec off). The decimal point position is the last number blinked.
After the entire value is indicated, the IFMA pauses two seconds and repeats the value.

During entry of a new value, if the Mode switch (S4) or any of the CFG DIP switch positions are changed before the

push button is pressed, the IFMA aborts the entry process and retains the previous setting.

GREEN

LED

SWITCHES

ROTARY

PUSHBUTTON

SWITCH

INPUT

LED

OUTPUT

RED

DIP

OUT

IN STA

TUS

The Model IFMA uses a comparator amplifier connected as a Schmidt

trigger circuit to convert the input wave form into the pulse form required for
proper circuit operation. Three set-up switches are used to configure the input
circuit to accept signals from a wide variety of sources, as follows:
S1 - ON: Connects a 1 K

 pull-down resistor for sensors with sourcing outputs.

(Maximum sensor output current is 24 mA @ 24 VDC output.)

S2 - ON: For logic level signals. Sets the input bias levels to V

IL

= 2.5 V, V

IH

= 3.0 V.

OFF: For increased sensitivity when used with magnetic pickups. Sets the

input bias levels to V

IL

= 0.25 V, V

IH

= 0.75 V.

S3 - ON: Connects a 3.9 K

 pull-up resistor for sensors with current sinking

output. (Max. sensor current = 3 mA.)

INPUT CIRCUITS, SENSOR CONNECTIONS AND CONFIGURATION SWITCH SET-UP

CONNECTIONS & CONFIGURATION SWITCH SET-UP FOR VARIOUS SENSOR OUTPUTS

Note: Separate power supplies must be used for sensor power and input power to maintain the isolation breakdown voltage specification. If isolation between power

and input is not needed, then a single supply can be used for both unit and sensor power.

DIP SWITCH DESCRIPTION

SECTION

Operating

Mode

(1.0)

Input Range Setting Using an Input Signal or Frequency Generator

(2.0)

Input Range Setting Using the Rotary Switch

(3.0)

Minimum

Response

Time

(4.0)

Maximum Response Time (Low Frequency Cut-Out Setting)

(5.0)

Analog Output Minimum Value

(6.0)

Analog Output Full Scale Value

(6.0)

4

5

6 7

5

4

7

6

5

4

7

6

5

4

7

6

5

4

7

6

5

4

7

6

5

4

7

6

Note: To return to normal operation,

place DIP switch 4 in the down
(RUN) position.

( ) Indicates Configuration Section

SENSOR
NPN O.C.

OUTPUT

RED
WHT

BLK

RLC SENSOR MODELS:

ASTC, LMPC, PSAC, ZCG, ZFG, ZGG, ZHG, ZBG

+12 V

INPUT

COMM.

SRC LOGIC SNK

ON 1 2 3

SENSOR

PNP O.C.

OUTPUT

+12V

OUTPUT
COMM.

+12 V

INPUT

COMM.

SRC LOGIC SNK

ON 1 2 3

+12V

INPUT

COMM.

SRC LOGIC SNK

MAGNETIC PICKUP

ON1 2 3

BLK OR BRN

BLU

+12 V

INPUT

COMM.

SRC LOGIC SNK

ON 1 2 3

7

8

9

RLC

SENSOR

MODELS

PSA-1

PSA-2

SRC LOGIC SNK

ON 1 2 3

+12 V

COMM.

INPUT

SENSOR

-EF

OUTPUT

A

B

C

*

Check sensor power requirements before
wiring.

*

Check sensor power requirements before
wiring.

*

Check sensor power requirements before
wiring.

*

Check sensor power requirements before
wiring.

MAGNETIC PICKUPS

RECOMMENDED RULES FOR MAGNETIC PICKUP CONNECTIONS
1. Connect the shield to the common Terminal “9” at the input of the IFMA. DO NOT

connect the shield at the pickup end. Leave the shield “open” at the pickup and insulate
the exposed shield to prevent electrical contact with the frame or case. (Shielded cable,
supplied on some RLC magnetic pickups, has open shield on pickup end.)

2-WIRE PROXIMITY SENSORS

AC VERSION

DC VERSION

OLDER STYLE RLC SENSORS WITH -EF OUTPUT

AC VERSION

DC VERSION

INPUT FROM CMOS OR TTL

SENSORS WITH CURRENT SINK OUTPUT (NPN O.C.)

AC VERSION

DC VERSION

SENSORS WITH CURRENT SOURCE OUTPUT (PNP O.C.)

AC VERSION

DC VERSION

A.C. INPUTS FROM INVERTERS, A.C. TACHOMETERS,
GENERATORS, ETC.