Mesa 7I27 Bedienungsanleitung
7I27 MANUAL
Rev 1.1
iii
Table of Contents
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
HARDWARE CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DIRECTION JUMPERS
CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CONNECTORS, LEDS, AND DEFAULT JUMPERING . . . . . . . . . . . . . . . . . . . 3
MOTOR AND 5V POWER CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
MOTOR CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ENCODER CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CONTROLLER CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
OPERATION
5V POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
MOTOR POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
FUSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ENCODER WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7I27 MANUAL 1
GENERAL
DESCRIPTION
The 7I27 is a dual 10A 40V Hbridge intended for motion control applications when
used with the MESA4I27, 4I34M, 4I65, 5I20, or 7I60motion control cards. The 7I60 uses
a 50 pin flat cable interface to the motion control card.
Motor power and motor connection are made with screw terminals. 5 pin
encoder connectors allow TTL encoders to be connected to the motion control system
through the 7I27 card
The 7I27 has overcurrent protection tp prevent damage to the Hbridge from
stalled or shorted motors.
7I27 MANUAL 2
HARDWARE CONFIGURATION
DIRECTION JUMPERS
There are only two jumper selectable options on the 7I27 card, The channel 0 and
1 directions. Jumpers W1 and W2 are used to reverse the direction of motor drive relative
to the DIR signal from the controller. The default setting of W1 and W2 are towards the
right. These jumpers normally do not need to be moved from their default positions.
.
7I27 MANUAL 3
CONNECTORS
CONNECTORS, LEDS, AND DEFAULT JUMPING
7I27 MANUAL 4
CONNECTORS
POWER CONNECTOR
The power connector TB2 is the center of the three screw terminal blocks on the
7I27. TB2 pinout is as follows:
PIN MARKING FUNCTION
1 (LEFT) +5 5V LOGIC POWER
2 (CENTER) GND POWER GND
3 (RIGHT) MP +12 to +40V MOTOR POWER
MOTOR CONNECTORS
Motor connections are made to screw terminals TB1 and TB3. TB1 and TB3
pinouts are as follows:
PIN MARKING FUNCTION
1 (LEFT) M+ POSITIVE MOTOR LEAD (OFTEN RED)
2 (CENTER) GND MOTOR CASE OR SHIELD GND
3 (RIGHT) MP NEGATIVE MOTOR LEAD (OFTEN BLACK)
7I27 MANUAL 5
CONNECTORS
ENCODER CONNECTORS
P1 and P5 are encoder connectors P1 is for encoder 0 and P4 is for encoder 1. P1
and P5 pinouts are as follows::
PIN FUNCTION
1 (TOP) GND
2 INDEX
3 ENCA
4 5V
5 ENCB
MOTORSENSE CONNECTORS
P2 and P3 give access to the MOTORSENSE0 and MOTORSENSE1 lines to the
controller. P2 and P3 pinouts are as follows:
PIN FUNCTION
1 (TOP) GND
2 MOTORSENSE 0 or 1
3 5V
7I27 MANUAL 6
CONNECTORS
CONTROLLER CONNECTOR
P5 is the motion controller connector P5 is a 50 pin latching header that mates with
standard female IDC headers.
PIN FUNCTION PIN FUNCTION
1 MOTOR1 ENCB 3 MOTOR1 ENCA
5 MOTOR0 ENCB 7 MOTOR0 ENCA
9 INDEX1 11 INDEX0
13 MOTOR1 PWM 15 MOTOR0 PWM
17 MOTOR1 DIR 19 MOTOR0 DIR
21 /MOTOR1ENA 23 /MOTOR0ENA
25 NC ON 7I27 27 NC ON 7I27
29 MOTOR1 SENSE 31 MOTOR0 SENSE
33 NC ON 7I27 35 NC ON 7I27
37 NC ON 7I27 39 NC ON 7I27
41 NC ON 7I27 43 NC ON 7I27
45 NC ON 7I27 47 NC ON 7I27
49 +5 POWER FROM CONTROLLER
ALL EVEN PINS ARE CONNECTED TO GROUND
7I27 MANUAL 7
7I27 OPERATION
5V POWER
The 7I27 requires 5V power for its logic and MOSFET gate drive. This power can
be supplied from the controller connector or from the screw terminal strip TB2. Voltages
less than 4.5V will cause the 7I27 to be forced into a reset state.
If the controller cable is longer than 2 feet it is suggested the the 7I27 5V power be
supplied from the screw terminal. This is because of the voltage drop on the controller
cable.
MOTOR POWER
Motor power is supplied to the 7I27 on pin 3 of TB2. Motor power can range from
5 to 40 VDC with an absolute maximum value of 50VDC. Voltages HIGHER than 50VDC
will activate the voltage clamp, short out the power supply and blow the input fuses.
INDICATORS
Five LEDS are provided on the 7I27 for status monitoring. LED location are shown
on the board diagram. The LEDS function as follows:
MOTOR0 POWER LED RED MOTOR 0 POWER (FUSE F1)
MOTOR1 POWER LED RED MOTOR 1 POWER (FUSE F2)
MOTOR0 DRIVE LED RED/GREEN MOTOR 0 DRIVE / DIRECTION
MOTOR1 DRIVE LED RED/GREEN MOTOR 1 DRIVE / DIRECTION
5V POWER GOOD GREEN MONITORS 5V POWER STATUS
FUSES
The 7I27 has a 10A fuse provided for each channel. These fuses are adjacent to
TB2. F1 is the fuse for channel0 and F2 is the fuse for channel1. Replacement part is
LittleFuse PN 251010. Note that these fuses are socketed for easy replacement.
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