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What Are Substitute Products For SYS Motor Timers?

1.It depends on SYS model. Refer to the following table.

Operating method		Time-limit operation
Reset operation		Self-reset						Electrical reset
Internal connection		Parallel motor and clutch connection			Separate motor and clutch connection
Time-limit contact		SPST-NO + SPST-NO	DPST-NO + SPST-NO	DPST-NO	SPDT		DPST-NO	SPDT
Instantaneous contact		SPDT	---	---	SPDT	---	---	SPDT
Flush mounting	Standerd cover	SYS SYS-3	SYS-T	SYS-T-F SYS-T-F3	SYS-2	SYS-T-F-2	SYS-T-2	SYS-R
Flush mounting	Transparent cover	SYS-C SYS-C-3	SYS-C-T	SYS-C-T-F SYS-C-T-F3	SYS-C-2	SYS-C-T-F-2	SYS-C-T-2	SYS-C-R
Surface mounting		SYS-F SYS-F-3	SYS-F-T	---	SYS-F-2	---	SYS-F-T-2	SYS-F-R
		(1) H3AM-NS			(2) H3AM-NSR

Operating method		Repetitive operation		Instantaneous operation
Reset operation		Self-reset	Electrical reset	Time-limit reset
Internal connection		---	---	---
Time-limit contact		SPDT		DPST-NO (time-limit reset)
Instantaneous contact		SPDT	SPST-NO	---
Flush mounting	Standerd cover	SYS-RF	SYS-R-RF	SYS-K
	Transparent cover	SYS-C-RF	SYS-C-R-RF	SYS-C-K
Surface mounting		SYS-F-RF	SYS-F-R-RF	SYS-F-K
		(3) H5BR or H5CX		(4) H3CR-AB

Note:

1.The SPDT' time-limit contacts output after a time lag of 3% FS max. for SYS-3, SYS-C-3, and SYS-F-3.

2.SYS-T-P, SYS-C-T-P, SYS-T-P-2, and SYS-C-T-P-2 are connected by metal connectors.

3.SYS-T-P3 and SYS-C-T-P3 are connected by 8-pin molded connectors.

4.The bottom row gives recommended substitute products or models with substitute functions. For details, refer to the following information.

2.The substitute product in column (1) is H3AM-NS Analog Timers. The power supply is a 100 to 240 VAC, 50/60 Hz common supply. H3AM model come in three time ranges and can be selected from the A, B, or C series. The terminal arrangements for external connection are not compatible.

If SYS or SYS-3 uses a combination of time-limit contacts and instantaneous contacts that exceeds the output of a DPDT contacts, additional contacts must be externally installed for H3AM because the output of a DPDT is the maximum limit for H3AM.

If SYS-3 has time-lag output, a time-lag circuit must be externally installed for H3AM because H3AM does not have a time-lag output function.

If SYS-T-P uses a connector, external wires must be connected to the terminal of H3AM because H3AM does not use connectors.

If SYS-F is a surface mounting model, there is no recommended substitute product because there are no surface mounting H3AM models. See whether a flush mounting model can be used.

3.The substitute product in column (2) is H3AM-NSR with electric reset. The motor and clutch are separately connected. The power supply is a 100 to 240 VAC, 50/60 Hz common supply. H3AM comes in three time ranges and can be selected from the A, B, or C series. The terminal arrangements for external connection are not compatible.

If SYS model has the suffix "-2" such as SYS-2, an inverted signal must be created externally to the timer because H3AM-NSR reset input which equates to SYS clutch input is inverted.

If SYS-T-P-2 or another model with a connector was used, H3AM will require the terminals to be externally wired because they do not use connectors.

If SYS-F-2 or another surface mounting model was used, there is no recommended substitute product because there are no surface mounting H3AM models. See whether a flush mounting model can be used.

4.There is no substitute product in column (3) because there are no H3AM models with repetitive operation. However, by treating H5BR or H5CX digital output of 0.5 s as a one-shot output, SYS-RP self-reset model as mode B, and SYS-R-RP electric reset model as mode B-1, a repetitive operation can be replicated. See whether this is suitable for your application because the size and mounting method are completely different.

5.There is no substitute product in column (4) because there are no H3AM models with instantaneous operation or time-limit resetting. However, by setting the output mode of H3CR-A8 Solid-state Timer to mode E (i.e., interval operation), the instantaneous operation and time-limit resetting functions can be replicated. However the operation of the timer will no longer be backed up for power blackouts.
See whether this setup is suitable for your application because the size and mounting method are completely different.

6.General Comparison of SYS and H3AM

	SYS	H3AM	Remarks
Appearance	5 types Flush mounting: Standerd cover Transparent cover (C) Metal connector (P) Molded connector (P3) Surface mounting (F) Case color: Gray (Munsell N3.0)	1 type Flush mounting Case color: Black (Munsell N1.5)
Dimensions	Front: 96 x 96 Body: 79 dia. x 96 (for flush mounting model)	Front: 96 x 96 Body: 77.5 dia. x 85	There are surface mounting SYS models.
Mounting method	Four M4 screws (for flush mounting model)	Four M4 screws	The mounting holes are the same
Mounting direction	Front: ±15° max. Side: ±45° max.	No restrictions
Supply voltage	100/110 VAC (50/60 Hz), 200/220 VAC (50/60 Hz)	100 to 240 VAC (50/60 Hz)
Time range	1 scale, 1 range, 12 modes	1 scale, 5 ranges, 3 multitimers A-series: 0.5 s to 30 h B-series: 1 s to 60 h C-series: 0.2 s to 12 h
Output method	Example: Time-limit SPDT + Instantaneous output SPDT Depends on model	Time-limit SPDT + Instantaneous SPDT or Time-limit DPDT (SW switching method)
Terminal block	Circular arrangement, ten M4 (for flush mounting model)	Two Parallel rows on left and right. Eight or ten M3.5	H3AM with finger protection cover
Degree of protection	None	IP65 (front panel only) (when separately sold waterproof packing is used)
Weight	Approx. 800 g	Approx. 350 g
Approved standards	CSA, LR	Conforms to UL, CSA, and CE

Link:
http://www.myomron.com/index.php?action=kb&print=937

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