User manual

Chapter 2 2762-17 Module Description
ADVANCED MICRO CONTROLS INC.
33
NvRAM Error (Err2)
All of the parameters are stored in a non-volatile static RAM memory when power is
removed from the 2762-17. The NvRAM has an integral lithium battery that will maintain the
parameter values in the absence of power for approximately ten years from the date of
manufacture.
It is remotely possible that the values can become corrupted through electrical noise or an
inopportune power outage. If this occurs, the 2762-17 display will change to figure 2.7.
This message is displayed at all times. This error can only
be cleared by pressing the [
CLEAR
] key. It cannot be cleared
from the backplane. If the message remains after pressing
the [
CLEAR
] key, the NvRAM is damaged. If the message
appears on every power up but can be cleared then the battery
is discharged. In either case, the module must be returned to
AMCI for repairs. See the inside front cover, Returns Policy,
for additional information.
Motor Control Output Connector
The motor control output connector has fourteen contacts and accepts the following
connector
!
AMCI Part #: MS-141
!
Weidmüller Part #: 128291
When enabled from the processor, the
position will jog as long as the external jog input
is active.
Input Voltage Specs:
Logic 0: 0 to 3 Vac/dc @ 500 µA max.
Logic 1: 10 to 24 Vac/dc @ 10 mA min.
All motor control outputs are fuse protected.
Fuse 1 protects channel 1 outputs. Fuse 2
protects channel 2 outputs. If a fuse blows, the
appropriate Fuse Indicator will turn on.
A wiring diagram for the motor control
output connector and external jog input are
given in Chapter 3, Motor Control Output
Connections, page 42.
PLC SERIES
Figure 2.7 NvRAM Error
+ External Jog Input
– External Jog Input
V
IN
1 / Fuse Indicator
CH 1 Motor Forward
CH 1 Motor Reverse
CH 1 High Speed
CH 1 Low Speed
V
IN
1 Common
V
IN
2 / Fuse Indicator
CH 2 Motor Forward
CH 2 Motor Reverse
CH 2 High Speed
CH 2 Low Speed
V
IN
2 Common
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Figure 2.8 Motor Control Output
Connector