MHT258a (Engl.)6-21
6.3.6 Always valid
Arbitrary signals among the control input signals can be always effective.
System parameter 87, 88
Para. Name Setting range Initial value Change
87 CONT always valid 1 0 to 56 (in increments of 1) 0 Power
88 CONT always valid 2 0 to 56 (in increments of 1) 0 Power
Function (Input signal) number to system para. 1 to 8
0: Not assigned 11: Alarm reset [RST] 38: Torque control 51: X1
1: Run command [RUN] 14: ACC0 43: Override valid 52: X2
2: Forward command [FWD] 16: Position preset 44: Override1 53: X3
3: Reverse command [REV] 27: Pulse train ratio 1 45: Override2 54: Free-run [BX]
5: Origin return [ORG] 28: Pulse train ratio 2 46: Override4 55: Edit permit command
6: Origin LS [LS] 29: P-action 47: Override8 56: Current position output
7: +OT 30: Torque limit 48: Interrupt input valid
8: -OT 34: External fault input 49: Interrupt input
10: Forced stop [EMG] 37: Position control 50: Deviation clear
The assignable signals are as follows:
1 : Run command [RUN] The run command becomes always effective.
14 : ACC0 Only acceleration time 2 and deceleration time 2 become always effective.
27 : Pulse train ratio 1
28 : Pulse train ratio 2
Pulse train ratio 1 or 2 becomes always effective. Do not assign these two signals 1 and 2 at system
para. 87 and 88 at the same time.
29 : P-action P-action is always effective. Assignment is not necessary.
30 : Torque limit Torque limit value becomes always effective. Unless assigned, maximum torque limit value (basic
para. 59) setting is effective.
37 : Position control
38 : Torque control
Position control or torque control becomes always effective.
43 : Override valid Override becomes always effective.
44 to 47 : Overeride 1, 2, 4, 8 Only specifically determined magnification becomes effective.
48 : Interrupt input valid Interrupt input becomes always effective.
51 to 53 : [X1], [X2], [x3] Only specifically determined multistep speed becomes effective.
Remarks: The signals that have been assigned to system para. 87 or 88 are always effective.
The only two signals can be “always effective.”
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