Master Clock(Wall-Mount Type) QC-5500 Series

1 circuit

  • QC-55101
  • QC-55102
水晶親時計【壁掛型】 QC-5500シリーズ

SEIKO QC-5500 Series is a high-precision quartz master clock equipped with a wide variety of functions that meet the needs of the users, such as synchronization output via RS-422 and daylight saving time setting. Models operating on AC 110V(QC-55X01) and AC 220V(QC-55X02) are available.
By connecting the GNSS Receiver(GNS-300) for exclusive use with QC-5500 Series, the internal clock can be adjusted automatically on a regular basis.

(1) Master clock function (QC-5510X, QC-5520X and QC-5530X)
Up to 30 secondary clocks can be connected to each channel(if the current consumption of each secondary clock is 12 mA).

(2) External synchronization function
By connecting with an external master clock generating 30-sec polarized signal output, the loss/gain of the clock is corrected automatically.

(3) Time correction function
By connecting with the GNSS Receiver(GNS-300), the time correction is made automatically.

Related products

Number of secondary clock circuits

1 circuit

Crystal oscillator frequency

4.194304 MHz

Time accuracy

Weekly rate of less than ±0.7 seconds (+5℃~+35℃), no accumulated error after time correction

Time display

【Master clock】
Year, month, date hour, minute, and seconds, and Digital display in 24-hour indication (not displayed during power failure)

【Monitor clock】
30-second interval hand movement

Time setting

【Master clock】
Setting of year, month, date, hour, minute and seconds

【Monitor clock】
60X speed quick advance of hands by APC system

Daylight saving time

Setting of year, month, date and hour for start date, and month, date and hour for end date

Secondary clock driver

【Driving signal】
DC 24 V 30-sec. polarized signal, Pulse width of 0.5 sec., No-contact

【Max. number of secondary clocks to drive】
30 units(12 mA/unit, 30 units/circuit)

【Maximum driving capacity】
360 mA(360 mA/circuit)

【Backup power】
DC 24 V, Built-in sealed Ni-Cd rechargeable battery

【Battery protection】
Overdischarge prevention circuit

【Signal voltage detection】
Signal voltage stopper function (stops output when secondary clock driving voltage lowers)

External synchronization input

DC 24 V 30-sec. polarized signal,
Every hour except 7, 19, 0, and 12 o’clock,
Synchronizable loss/gain range …Less than 15 seconds

External synchronization output

RS-422

GPS time correction

Number of times of time correction: 24 times a day (every hour on the hour when GPS Receiver
is connected)

Input power supply

■QC-55101:AC 110 V ±10 % or DC 24 V ±10 %
■QC-55102:AC 220 V ±10 % or DC 24 V ±10 %

Power consumption

21W

Power failure backup

【Master clock】
Approx. 5 years (no indication on digital display, counting by internal clock only)

【Secondary clock driver】
30 hours (in case of power failure of more than 30 hours, hands are adjusted automatically after recovery.)

Operational temperature range

-10℃~+50℃

Outer dimensions

W420×H354×D110 (mm)

Weight

Approx. 7.0 kg

Enclosure

【Front panel】ABS and stainless steel, pearl gray with a slight gloss
【Rear panel】Stainless steel, pearl gray with a slight gloss

Accessories

Plastic foot, 4 pcs,
Miniature fuse,
Instruction manual,
Mounting hole drilling template,
and Insulated crimp terminal

Options

Rack mounting fittings(in accordance with EIA Standard)
GNSS Receiver(GNS-300)

Remarks

*EIA compliant(Options)
【E354】
Outer dimensions: W480×H354 (mm) (when mounted to the main body)
Weight: Approx. 2 kg
Casing finish: stainless steel with coating finish (pearl gray with a slight gloss)
【E442】
Outer dimensions: W480×H442 (mm) (when mounted to the main body)
Weight: Approx. 2.5 kg
Casing finish: stainless steel with coating finish (pearl gray with a slight gloss)

About products