BECKHOFF EL7037 - Manual (Page 55)

Installation
Terminal Points - Left-hand section of the housing
Terminal
point Name Signal
1 A Encoder input A
2 C Encoder input C (zero input). If object 7000:01 [ } 186] is set in the
control word and a rising edge occurs at encoder input C, the current
counter value is stored as a reference mark in the latch register.
3 Encoder supply
+24V Encoder supply (from positive power contact)
4 Input 1 Digital input 1 (24 V
DC
)
5 B Encoder input B
6 Latch / Gate Latch input. The current counter value is stored as a reference mark in
the latch register, if
• object 7000:02 [ } 186] is set and a rising edge occurs at the latch
input; or
• object 7000:04 [ } 186] is set and a falling edge occurs at the latch
input.
7 Encoder supply
0V Encoder supply (from negative power contact)
8 Input 2 Digital input 2 (24 V
DC
)
Terminal Points - Right-hand section of the housing
Terminal
point Name Signal
1' A1 Motor winding A1
2' B1 Motor winding B1
3' Motor supply +50V Feeding for output stage (max. +50 V
DC
)
4' Motor supply +50V Feeding for output stage (max. +50 V
DC
)
5' A2 Motor winding A2
6' B2 Motor winding B2
7' Motor supply 0V Feeding for output stage (0 V
DC
)
8' Motor supply 0V Feeding for output stage (0 V
DC
)
4.7.2 EL7047 - General connection examples
WARNING
Risk of injury through electric shock and damage to the device!
Bring the Bus Terminal system into a safe, de-energized state before starting mounting,
disassembly or wiring of the Bus Terminals.
Attention
Connect the motor strands correctly!
Connect the windings of a motor strand only to the terminal points of the same output driver
of the stepper motor terminal, e.g.:
• one motor strand to terminal points A1 and A2,
• the other motor strand to terminal points B1 and B2.
Connecting a motor strand to the terminal points of different output drivers (e.g. to A1 and
B1) can lead to destruction of the output drivers of stepper motor terminal!
EL70x7 55 Version 1.0