Fan Functions
Reading the Model Code
The YCC model code gives the fan type, speed class, size, bearing, voltage and frame variant in that order. Example: YDH1238B24F is a 120 × 120 × 38 mm DC axial fan in the high speed class, with two ball bearings, for 24 V; F marks a different impeller and frame variant.
Models with the bearing letter X are offered with more than one bearing; the options are listed in the model table and chosen when you add the model to your quote list.
- 1Y YCCFAN
- 2D Type: D DC · A AC · E EC · B blower
- 3H Speed: G extreme · S super-high · U ultra-high · D extra-high · H high · M middle · L low
- 41238 Size: 120 × 120 × 38 mm
- 5B Bearing: C CycleSeal · B two ball bearing · S sleeve bearing · X multiple options
- 624 Voltage: DC 05 · 12 · 24 · 48 V; AC 1 = 100 ~ 125 · 2 = 220 ~ 240 · 3 = 380 · 4 = 415 V
- 7F Suffix: blank = normal · C capacitor-run induction motor · N external rotor motor · F / G / J / K / P different impeller and frame
FG: Frequency Generator (Tachometer)
While the fan runs, the FG output gives pulses proportional to speed, so the system can read the actual fan speed. When the fan is locked and stops, the output stays at a high or a low level, depending on the model.
The output is taken from a transistor inside the fan and pulled up to Vcc through resistor R in the customer circuit. Select R so that the link current stays below 5 mA. Vcc is at most the fan's operating voltage; Vce is at most 0.7 V.
Series offering this option (106)
DC Axial Fans (58): DC2006F, DC2008, DC2510, DC3007F, DC3010, DC3510F, DC3828, DC4007, DC4010, DC4010F, DC4010G, DC4015, DC4020F, DC4020G, DC4028F, DC4028G, DC4028H, DC4056G, DC4510, DC5010F, DC5015F, DC5020, DC6010, DC6015F, DC6020, DC6025F, DC6025G, DC6038F, DC7010, DC7015, DC7020, DC7025, DC8010, DC8015F, DC8020F, DC8025, DC8025F, DC8025G, DC8038, DC8038F, DC8038G, DC9225, DC9225F, DC9225G, DC9232, DC9238, DC9238F, DC1225, DC1225G, DC1225H, DC1225F, DC1238, DC1238J, DC1238F, DC1425, DC1751F, DC1751H, DC2060
Micro Fans (3): DC2010F, DC2507F, DC2507F
DC Blower Fans (38): DC2006F, DC2008F, DC3007, DC3010, DC3015, DC3507, DC3507F, DC3510, DC4007, DC4010, DC4010J, DC4015, DC4020, DC4510, DC5010, DC5015, DC5015F, DC5020, DC5020J, DC5025, DC5508, DC5512, DC6012, DC6015, DC6025, DC6028F, DC7012, DC7515F, DC7515, DC7525, DC7530F, DC8020, DC9025, DC9330, DC9733, DC1025, DC1232, DC1369
EC Axial Fans (7): EC6028, EC6038, EC8038, EC9238, EC1238, EC1751F, EC2060
RD and RRD: Alarm Signal
The alarm output reports with a single level whether the fan is turning. RD (alarm high): the output is low while the fan runs and goes high when the fan is locked and stops. RRD (alarm low): the output is high while the fan runs and goes low when the fan stops.
The connection is the same as for FG: select R so that the link current stays below 5 mA; Vce is at most 0.7 V.
Series offering this option (99)
DC Axial Fans (58): DC2006F, DC2008, DC2510, DC3007F, DC3010, DC3510F, DC3828, DC4007, DC4010, DC4010F, DC4010G, DC4015, DC4020F, DC4020G, DC4028F, DC4028G, DC4028H, DC4056G, DC4510, DC5010F, DC5015F, DC5020, DC6010, DC6015F, DC6020, DC6025F, DC6025G, DC6038F, DC7010, DC7015, DC7020, DC7025, DC8010, DC8015F, DC8020F, DC8025, DC8025F, DC8025G, DC8038, DC8038F, DC8038G, DC9225, DC9225F, DC9225G, DC9232, DC9238, DC9238F, DC1225, DC1225G, DC1225H, DC1225F, DC1238, DC1238J, DC1238F, DC1425, DC1751F, DC1751H, DC2060
Micro Fans (3): DC2010F, DC2507F, DC2507F
DC Blower Fans (38): DC2006F, DC2008F, DC3007, DC3010, DC3015, DC3507, DC3507F, DC3510, DC4007, DC4010, DC4010J, DC4015, DC4020, DC4510, DC5010, DC5015, DC5015F, DC5020, DC5020J, DC5025, DC5508, DC5512, DC6012, DC6015, DC6025, DC6028F, DC7012, DC7515F, DC7515, DC7525, DC7530F, DC8020, DC9025, DC9330, DC9733, DC1025, DC1232, DC1369
Auto Restart (Locked Rotor Protection)
When the fan is locked, the current is reduced to 0.02 ~ 0.04 A. After several seconds the fan tries to restart; if it is still locked, the current is shut down again. In the diagram T1 is the wait time (2.5 ~ 10 s) and T2 the restart attempt (0.3 ~ 1.5 s).
Series offering this option (106)
DC Axial Fans (58): DC2006F, DC2008, DC2510, DC3007F, DC3010, DC3510F, DC3828, DC4007, DC4010, DC4010F, DC4010G, DC4015, DC4020F, DC4020G, DC4028F, DC4028G, DC4028H, DC4056G, DC4510, DC5010F, DC5015F, DC5020, DC6010, DC6015F, DC6020, DC6025F, DC6025G, DC6038F, DC7010, DC7015, DC7020, DC7025, DC8010, DC8015F, DC8020F, DC8025, DC8025F, DC8025G, DC8038, DC8038F, DC8038G, DC9225, DC9225F, DC9225G, DC9232, DC9238, DC9238F, DC1225, DC1225G, DC1225H, DC1225F, DC1238, DC1238J, DC1238F, DC1425, DC1751F, DC1751H, DC2060
Micro Fans (3): DC2010F, DC2507F, DC2507F
DC Blower Fans (38): DC2006F, DC2008F, DC3007, DC3010, DC3015, DC3507, DC3507F, DC3510, DC4007, DC4010, DC4010J, DC4015, DC4020, DC4510, DC5010, DC5015, DC5015F, DC5020, DC5020J, DC5025, DC5508, DC5512, DC6012, DC6015, DC6025, DC6028F, DC7012, DC7515F, DC7515, DC7525, DC7530F, DC8020, DC9025, DC9330, DC9733, DC1025, DC1232, DC1369
EC Axial Fans (7): EC6028, EC6038, EC8038, EC9238, EC1238, EC1751F, EC2060
PWM Speed Control
Fan speed is set with a pulse width modulated (PWM) signal on the blue wire. The signal frequency may be 300 Hz to 30 kHz; the pulse high level must be 2.8 – 10 V and the low level at most 0.6 V. The duty cycle (Ton / T) ranges from 0 to 100 % and the speed rises with it.
Behaviour at low duty cycle depends on the model; the catalogue gives three curve types (the axis below is for an example fan).
Series offering this option (99)
DC Axial Fans (58): DC2006F, DC2008, DC2510, DC3007F, DC3010, DC3510F, DC3828, DC4007, DC4010, DC4010F, DC4010G, DC4015, DC4020F, DC4020G, DC4028F, DC4028G, DC4028H, DC4056G, DC4510, DC5010F, DC5015F, DC5020, DC6010, DC6015F, DC6020, DC6025F, DC6025G, DC6038F, DC7010, DC7015, DC7020, DC7025, DC8010, DC8015F, DC8020F, DC8025, DC8025F, DC8025G, DC8038, DC8038F, DC8038G, DC9225, DC9225F, DC9225G, DC9232, DC9238, DC9238F, DC1225, DC1225G, DC1225H, DC1225F, DC1238, DC1238J, DC1238F, DC1425, DC1751F, DC1751H, DC2060
Micro Fans (3): DC2010F, DC2507F, DC2507F
DC Blower Fans (38): DC2006F, DC2008F, DC3007, DC3010, DC3015, DC3507, DC3507F, DC3510, DC4007, DC4010, DC4010J, DC4015, DC4020, DC4510, DC5010, DC5015, DC5015F, DC5020, DC5020J, DC5025, DC5508, DC5512, DC6012, DC6015, DC6025, DC6028F, DC7012, DC7515F, DC7515, DC7525, DC7530F, DC8020, DC9025, DC9330, DC9733, DC1025, DC1232, DC1369
Soft Start
When the fan is powered on, the current rises gradually; the fan generally reaches its rated speed within 15 seconds.
Polarity Protection
Protects the fan's drive electronics if the supply leads are connected the wrong way round.
Series offering this option (106)
DC Axial Fans (58): DC2006F, DC2008, DC2510, DC3007F, DC3010, DC3510F, DC3828, DC4007, DC4010, DC4010F, DC4010G, DC4015, DC4020F, DC4020G, DC4028F, DC4028G, DC4028H, DC4056G, DC4510, DC5010F, DC5015F, DC5020, DC6010, DC6015F, DC6020, DC6025F, DC6025G, DC6038F, DC7010, DC7015, DC7020, DC7025, DC8010, DC8015F, DC8020F, DC8025, DC8025F, DC8025G, DC8038, DC8038F, DC8038G, DC9225, DC9225F, DC9225G, DC9232, DC9238, DC9238F, DC1225, DC1225G, DC1225H, DC1225F, DC1238, DC1238J, DC1238F, DC1425, DC1751F, DC1751H, DC2060
Micro Fans (3): DC2010F, DC2507F, DC2507F
DC Blower Fans (38): DC2006F, DC2008F, DC3007, DC3010, DC3015, DC3507, DC3507F, DC3510, DC4007, DC4010, DC4010J, DC4015, DC4020, DC4510, DC5010, DC5015, DC5015F, DC5020, DC5020J, DC5025, DC5508, DC5512, DC6012, DC6015, DC6025, DC6028F, DC7012, DC7515F, DC7515, DC7525, DC7530F, DC8020, DC9025, DC9330, DC9733, DC1025, DC1232, DC1369
EC Axial Fans (7): EC6028, EC6038, EC8038, EC9238, EC1238, EC1751F, EC2060
Why Björn Tech?
Single-Source Supplier
From mechanical packaging and thermal management to industrial storage: one order, one invoice, one technical contact.
Custom Development Support
Standard products are the starting point; customer-specific dimensions, surface treatments and EMC shielding concepts are developed together with the manufacturers' engineers.
Fast Supply & Technical Support
As an authorised distributor in Türkiye, we offer fast delivery of stock products and on-site technical consulting.
Talk to our engineering team about your project.
Contact Us