Hitachi SJ-PB(T) instruction manual PZD-part, Control- / status word STW/ZSW

CHAPTER5 OPERATING

5.3 PZD-part

In this chapter the process data part (PZD) of a PPO is discussed.

The PZD part consists of a fixed part (PZD1-2, all PPO’s) and a parameterable part (PZD 3-10, shaded grey above, PPO 2, 4 and 5).

In the fixed part, control word and speed reference are transferred to the inverter while status word and actual output frequency are transferred from the inverter.

In the parameterable part, PZD word 3-10, the user can configure what parameters that should be transferred to/from the inverter every bus-cycle (see chapter 5.3.3 and Appendix).

5.3.1 Control- / status word (STW/ZSW)

This section describes how to operate the inverter with the control-/status word. With the control word the Profidrive state-machine (Figure 5-2) is controlled, the status word is reflecting the state of the inverter. Profidrive Control Word (STW):

The control word is used to send control commands to the inverter (PLC->Inverter).

			Control word
Bit	Value	Meaning	Remark
0	1	On1	Inverter can be started if all other start conditions are fulfilled.
	0	OFF1	Normal stop; uses deceleration time specified in “1st Deceleration time” (F003).
1	1	ON2	Inverter can be started if all other start conditions are fulfilled.
	0	OFF2	Inverter coast to stop. Returns to Switch-on inhibit state.
2	1	ON3	Inverter can be started if all other start conditions are fulfilled.
	0	OFF 3	Quick stop that uses deceleration time specified in “2nd deceleration time”
			(F203).
3	1	Operation enabled	Inverter can be started if all other start conditions are fulfilled.
	0	Operation disabled	Inverter coast to stop (Enter Inhibit operation state).
4	1	Condition for operation	Inverter can be started if all other start conditions are fulfilled.
	0	Ramp generator disabled	Output frequency is set to zero. Inverter remains in the running state.
5	1	Ramp generator enabled	Inverter can be started if all other start conditions are fulfilled.
	0	Stop ramp generator	Actual output frequency is frozen. A change to frequency set-point has no
			effect.
6	1	Enable set-point	Inverter can be started if all other start conditions are fulfilled,
			using “1st Acceleration time” (F002).
	0	Inhibit set-point	Normal stop that uses deceleration time specified in “1st deceleration time”.
7	1	Acknowledge	Fault is acknowledged on positive edge, i.e. bit 7=0 then 1
			(Enter Switch-on inhibited state).
	0	No function
8	1	Inching 1 ON	Inverter accelerates to inching set-point 1.
			Profidrive must be in “Enable operation” state.
			Parameter “Jogging frequency” specifies the jogging set-point (A038).
	0	Inching 1 OFF	Inverter brakes as fast as possible and goes into the “Enable operation” state.
9		Not used
10	1	Data valid	The control word and frequency set-point (from Profibus) are activated.
			Please refer to chapter 2.2.4.
	0	Data invalid	The control word and frequency set-point (from Profibus) are not valid.
			Please refer to chapter 2.2.4.
11	1	REV	Inverter will operate in reverse motion.
			Please note that a negative reference and reverse selected will result in inverter
			running forward.
	0	FWD	Inverter will operate in forward motion.
12	1	Commands invalid	The fieldbus module will not write any commands to the inverter. This makes it
			possible to operate motor via the terminal input (if A002 is set to “Terminal”).
	0	Commands valid	The fieldbus module can write commands to the inverter (if A002 is set to
			“Terminal”).
13	1	Reference invalid	The fieldbus module will not write any reference to the inverter.
	0	Reference valid	The fieldbus module can write reference to the inverter (if A001 is set to
			“Operator”).
14,		Not used
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