Interface Specifications Comparison With External Devices - Mitsubishi Electric MELSEC-A/QnA Series Handbook

7
POSITIONING MODULE REPLACEMENT

7.5.5 Interface specifications comparison with external devices

For the external interface specifications, the following shows the differences between AD75M and
QD75M.
(1) Comparison of electrical specifications
Item
Upper/lower limit signal
Stop signal
Near-point dog signal
Input
Speed-position switching signal
Manual pulse generator
The column of interface specifications differences is described as the form, [Specifications of AD75M]  [Specifications of
*
QD75M].
(2) Comparison of connector signal sequence
When using with QD75M, change the connector and wiring.
Name
Manual pulse generator A phase
Manual pulse generator B phase
Near-Point signal
Stop signal
Upper limit
Lower limit
*2
External start
Speed-position switching signal
*1 The following shows comparisons about manual pulse generator A phase/B phase.
No. of connection
Mode change (Parameter)
*2 With the QD75M, the "external start signal" and "speed-position switching signal" are combined into the "external
command signal/switching signal".
Differences as Interface specifications*
OFF current: 1.5mA1.0mA
Input resistance: 4.7k6.8k
OFF current: 1.5mA1.0mA
Input resistance: 4.7k6.8k
OFF current: 1.5mA1.0mA
Input resistance: 4.7k6.8k
Response time: 4ms1ms
OFF current: 1.5mA1.0mA
Input resistance: 4.7k6.8k
Response time: 4ms1ms
ON current: 3.5mA1.0mA
Input resistance: 1.5k1.2k
AD75M
Logic
(Initial setting)
Negative logic
*1
(multiple of 4)
Negative logic
Negative logic
Negative logic
Negative logic
Negative logic
*2
Negative logic
AD75M
1 generator/axis
Not allowed
compati-
bility
Check whether the OFF current value met
satisfied values
Check whether the OFF current value met
satisfied values
Check whether the OFF current value met
satisfied values
Check whether the OFF current value met
satisfied values
Logic switching by
parameter (Initial setting)
Negative logic
Not allowed
(multiple of 4)
Not allowed Negative logic
Not allowed Negative logic
Not allowed Negative logic
Not allowed Negative logic
Not allowed
Negative logic
Not allowed
: Compatible, : Partial change required
Precautions for replacement
QD75M
Logic Logic switching by
parameter
Allowed
Allowed
Allowed
Allowed
Allowed
Allowed
QD75M
1 generator/module
Allowed
1 x mode, 2 x mode,
4 x mode, PLS/SIGN mode
7
- 40