MDA Series. DC Axial Flow Fans with Low-Speed Alarm. $$ The Low-Speed Alarm: "Features

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1 DC Axial Flow Fans with Low-Speed Alarm MDA Series This series features a built-in alarm circuit that the host controller can recognize if the fan speed drops. This is important for noticing quick drops in the cooling capacity of the fan caused by a service life of the fan or by the ingress of a foreign objects. "Features $$ The Low-Speed Alarm: An alarm is output when the fan speed drops to 7% or less. No Low-Speed Host Controller Rated speed Speed 7% max. Low-Speed Alarm Signal $$ Easy-to-Connect Fan Types are also Available. We have a cable with a connector for easy connection in addition to the standard lead wire type. The connector type fan can reduce wiring. Maintenance is also very easy because the fans can be replaced just by disconnecting the connector. $$ All Necessary Items for Installation are Included. The finger guard, cable with connector (connector type only) and mounting screws are included, so they can be used immediately. Fan Finger Guard (Included) Mounting Screws (Included) Cable with Connector (Included) 1

2 $$ Contributes to Increased Reliability of Equipment. If you use the MDA Series: An alarm is output when the fan speed drops due to the service life of the fan or the ingress of foreign objects. This makes it possible to order and replace the fan before it stops. Even if the cooling capacity of the fan decreases, the effect of that on the equipment can be minimized. When fan speed drops If a fan with lowspeed alarm is not used: If the drop in fan speed is left unaddressed, it will lead to a rise in the temperature inside the equipment. This will then affect the equipment. Fan Stops Host Controller Fan Arrangement and Replacement Heat generation! Use the MDA Series in the Following Scenario. $ $ When a Spare Fan is Installed $$ When Multiple Fans are Installed Spare Fan Since multiple fans are installed, you cannot identify which fan is failing when the cooling capacity decreases. This leads to the replacement of all fans. If MDA Series is Used: If MDA Series is Used: Alarm Output Host Controller A spare fan is installed in case the cooling capacity decreases. An alarm is output when the fan speed drops. As a result, no spare fan needs to be installed. You can identify which fan is failing because an alarm is output. As a result, only the fan with low speed can be replaced. Lineup MDA Series Lead wire Connector Power Supply Voltage M14 (M5.51) M119 (M4.69) Frame Size [mm (in.)] M92 (M3.62) M8 (M3.15) M62 (M2.44) 12 VDC 24 VDC 48 VDC 2

3 General Specifications Item Insulation Resistance Dielectric Strength Temperature Rise Operating Voltage Range Thermal Class Overheat Protection Ambient Temperature Ambient Humidity Color Materials Specifications 1 MV or more when 25 VDC megger (MDA1451: 5 VDC megger) is applied between the windings and the frame after continuous operation under normal ambient temperature and humidity. Sufficient to withstand 5 V at 5 Hz applied between the windings and the frame for 1 minute after continuous operation under normal ambient temperature and humidity. 1ºC (18 F) or less measured by the thermometer method after the temperature of the case has stabilized after continuous operation under normal ambient temperature and humidity. (MDA1451: 15 C [27 F] or less) w15% of the rated voltage MDA1225: w1% of the rated voltage UL/CSA standards: 15 (A), EN standards: 12 (E) Built-in overheat protection circuit s1pr6 C (r14pr14 F) 85% or less (non-condensing) Frame: : MDA925, MDA825, MDA625 Unpainted (Aluminum): MDA1451, MDA1225 Blades: Fan Frame: Die cast aluminum: MDA1451, MDA1225 Polycarbonate (Flammability grade V-): MDA925, MDA825, MDA625 Blades: Polycarbonate (Flammability grade V-) Product Number Code MDA H G a Series MDA: MDA Series b Frame Size 6: 62 mm (2.44 in.) 8: 8 mm (3.15 in.) 9: 92 mm (3.62 in.) 12: 119 mm (4.69 in.) 14: 14 mm (5.51 in.) c Frame Thickness 25: mm (1. in.) 51: 51 mm (2.1 in.) 4 Power Supply Voltage 12: 12 VDC 24: 24 VDC 48: 48 VDC 5 Connection Blank: Lead wire type Type H: Connector Type 6 Accessory G: Finger Guard 3

4 Low-Speed Alarm Specifications The alarm specifications vary depending on the type of alarm. Check the alarm specifications according to the model name you use. Specifications can also be referred to by the alarm specifications number shown on the specifications for each product. An alarm is output when the fan speed drops to a specific level. Output mode is electronic output. Alarm Specifications Number 1 s MDA Series: MDA1451- (H)G Alarm Specifications Alarm Activation Speed Output Mode Output Condition Maximum Rating Delay Function 18±4 r/min Open-Collector Output Normal Operation: L Level (Internal transistor ON) : H Level (Internal transistor OFF) Maximum Applied Voltage: 3 VDC max. Maximum Inflow Current: 15 ma max. Built-In Starting Delay Time: 1 sec. max. (The alarm function starts monitoring within 1 sec. after the power is turned on.) Example of Alarm Circuit Connection Fan 15 ma max. 3 VDC max. R V Customer's Circuit Alarm Specifications Number 2 s MDA Series: MDA1225- (H)G Alarm Specifications Alarm Activation Speed Output Mode Output Condition Maximum Rating Delay Function 21±4 r/min Open-Collector Output Normal Operation: L Level (Internal transistor ON) : H Level (Internal transistor OFF) Maximum Applied Voltage: 3 VDC max. Maximum Inflow Current: 15 ma max. Built-In Starting Delay Time: 1 sec. max. (The alarm function starts monitoring within 1 sec. after the power is turned on.) Example of Alarm Circuit Connection 3 VDC max. 15 ma R max. V Fan Customer's Circuit Alarm Specifications Number 3 s MDA Series: MDA925- (H)G, MDA825- (H)G, MDA625- (H)G Alarm Specifications Example of Alarm Circuit Connection MDA925- (H)G: 19±4 r/min Alarm Activation Speed 3 VDC max. MDA825- (H)G, MDA625- (H)G: 23±4 r/min 15 ma R Output Mode Open-Collector Output max. Normal Operation: L Level (Internal transistor ON) Output Condition : H Level (Internal transistor OFF) V Maximum Rating Maximum Applied Voltage: 3 VDC max. Fan Customer's Circuit Maximum Inflow Current: 15 ma max. None (External delay circuit is required to prevent alarm detection Delay Function when starting the fan. The delay time should be 1 sec. min.) 4

5 MDA Series M14 mm 51 mm Thick (M5.51 in. 2.1 in. Thick) #With Alarm Operating Voltage Range: ±15% (Applies to each voltage) Materials Frame: Die cast aluminum Blades: Polycarbonate (Flammability grade V-) Overheat Protection: Built-in overheat protection circuit Bearings: Ball bearings " Specifications Function Low-Speed Alarm, Electronic Alarm Type <Alarm Specifications: 1> $ $ Alarm Specifications 1 Page 4 Voltage Current Speed Max. Max. Static Pressure Noise Level Lead Wire Type Connector Type VDC A r/min m 3 /min CFM Pa inh2o db (A) MDA G MDA HG MDA G MDA HG The following items are included in each product. Fan, Finger Guard, Cable with Connector, Mounting Screws (M4 7 mm (2.76 in)), Operating Manual Connector Type only " Static Pressure Characteristics (Characteristics when a finger guard is not installed) Static Pressure [inh2o] Static Pressure [Pa] Speed Static Pressure Speed [r/min] [m 3 /min] [CFM] " Dimensions Unit = mm (in.) Mass:.65 kg (1.43 lb.) E19 14 (5.51) 124.5±.5 (4.9±.2) 3 (12) 6 (.24) 51 (2.1) 6 (.24) 14 (5.51) 124.5±.5 (4.9±.2) 1 (.39) Protective Earth Terminal M4 UL Style 3385, AWG24 8 ϕ4.3 (ϕ.169) 5

6 $$ Connector Type Fan Mass:.65 kg (1.43 lb.) E (5.51) 124.5±.5 (4.9±.2) 1 (4) 51 (2.1) 6 (.24) 6 (.24) 14 (5.51) 124.5±.5 (4.9±.2) UL Style 3385, AWG24 Housing: SMR-3V-N (J.S.T.) Protective Earth Terminal M4 8 ϕ4.3 (ϕ.169) Cable with Connector (Included) 1 (39.37) Housing: SMP-3V-NC (J.S.T.) ϕ4.8 (ϕ.19) Core Wires AWG22 $$ Finger Guard (Included, common to lead wire type and connector type) Conformed Component for Safety Standards Mass: 64 g (2.3 oz.) E (.169) 5 (.2) " Panel Cut-Out Unit = mm (in.) 138 (5.43) (4.9) 138 (5.43) (4.9) ϕ147 (ϕ5.79) 4 ϕ4.5 (ϕ.177) 134 (5.28) 178 (7.1) 146 (5.75) Outlet Side/Intake Side "Connection Diagrams 24 VDC or 48 VDC $$ Connector Type 24 VDC or 48 VDC Cable with Connector PE PE "Accessories Product Finger Guard Filter FG14D FL14 $$ When installing a finger guard on both sides, please purchase one additional accessory finger guard. $$ For detailed accessories information see Oriental Motor General Catalog or visit 6

7 MDA Series M119 mm 25 mm Thick (M4.69 in. 1. in. Thick) #With Alarm Operating Voltage Range: ±1% (Applies to each voltage) Materials Frame: Die cast aluminum Blades: Polycarbonate (Flammability grade V-) Overheat Protection: Built-in overheat protection circuit Bearings: Ball bearings " Specifications Function Low-Speed Alarm, Electronic Alarm Type <Alarm Specifications: 2> $ $ Alarm Specifications 2 Page 4 Voltage Current Speed Max. Max. Static Pressure Noise Level Lead Wire Type Connector Type VDC A r/min m 3 /min CFM Pa inh2o db (A) MDA G MDA HG MDA G MDA HG The following items are included in each product. Fan, Finger Guard, Cable with Connector, Mounting Screws (M4 4 mm (1.57 in)), Operating Manual Connector Type only " Static Pressure Characteristics (Characteristics when a finger guard is not installed) Static Pressure [inh2o] Static Pressure [Pa] Speed Static Pressure Speed [r/min] [m 3 /min] [CFM] " Dimensions Unit = mm (in.) Mass: :.3 kg (.66 lb.) E2 119 (4.69) 14.8±.3 (4.126±.12) (1.) 4 (.16) 4 (.16) UL Style 17, AWG (4.69) 14.8±.3 (4.126±.12) 1 (.39) 3 (12) 8 ϕ4.3 (ϕ.169) 7

8 15 (5.91) $$ Connector Type Fan 119 (4.69) 14.8±.3 (4.126±.12) (1.) 4 (.16) 4 (.16) Cable with Connector (Included) 1 (39.37) 119 (4.69) 14.8±.3 (4.126±.12) UL Style 17, AWG24 5 (2) 8 ϕ4.3 (ϕ.169) Housing: SMP-3V-NC (J.S.T.) ϕ4.8 (ϕ.19) Core Wires AWG22 Housing: SMR-4V-N (J.S.T.) $$ Finger Guard (Included, common to lead wire type and connector type) Conformed Component for Safety Standards Mass: 45 g (1.59 oz.) E (.169) 115 (4.53) 5 (.2) " Panel Cut-Out Unit = mm (in.) 116 (4.57) 14.8 (4.126) 116 (4.57) 14.8 (4.126) ϕ136 (ϕ5.35) 4 ϕ4.5 (ϕ.177) 14.8 (4.126) 14.8 (4.126) 116 (4.57) Outlet Side 4 ϕ4.5 (ϕ.177) Intake Side "Connection Diagrams $$ Connector Type Cable with Connector "Accessories Product Finger Guard Filter Screen FG12D FL12 FS12S $$ When installing a finger guard on both sides, please purchase one additional accessory finger guard. $$ For detailed accessories information see Oriental Motor General Catalog or visit 8

9 MDA Series M92 mm 25 mm Thick (M3.62 in. 1. in. Thick) #With Alarm Operating Voltage Range: ±15% (Applies to each voltage) Materials Frame: Polycarbonate (Flammability grade V-) Blades: Polycarbonate (Flammability grade V-) Overheat Protection: Built-in overheat protection circuit Bearings: Ball bearings " Specifications Function Low-Speed Alarm, Electronic Alarm Type <Alarm Specifications: 3> $ $ Alarm Specifications 3 Page 4 Voltage Current Speed Max. Max. Static Pressure Noise Level Lead Wire Type Connector Type VDC A r/min m 3 /min CFM Pa inh2o db (A) MDA925-12G MDA925-12HG MDA925-24G MDA925-24HG The following items are included in each product. Fan, Finger Guard, Cable with Connector, Mounting Screws (M4 4 mm (1.57 in)), Operating Manual Connector Type only " Static Pressure Characteristics (Characteristics when a finger guard is not installed) Static Pressure [inh2o] Static Pressure [Pa] Speed Static Pressure Speed [r/min] [m 3 /min] [CFM] 1.6 " Dimensions Unit = mm (in.) Mass:.12 kg (.26 lb.) E22 92 (3.62) 82.5±.3 (3.248±.12) (1.) UL Style 17, AWG24 92 (3.62) 82.5±.3 (3.248±.12) 1 (.39) 3 (12) 4 ϕ4.3 (ϕ.169) 9

10 $$ Connector Type Fan Mass:.12 kg (.26 lb.) E121 UL Style 17, AWG24 92 (3.62) 82.5±.3 (3.248±.12) 5 (2) 92 (3.62) 82.5±.3 (3.248±.12) 4 ϕ4.3 (ϕ.169) (1.) Cable with Connector (Included) Housing: SMP-3V-NC (J.S.T.) 1 (39.37) ϕ4.8 (ϕ.19) Core Wires AWG22 Housing: SMR-3V-N(J.S.T.) $$ Finger Guard (Included, common to lead wire type and connector type) Conformed Component for Safety Standards Mass: 28 g (.99 oz.) E (.169) 84 (3.31) (4.67) 5 (.2) " Panel Cut-Out Unit = mm (in.) 9 (3.54) 82.5 (3.248) 9 (3.54) 82.5 (3.248) ϕ16 (ϕ4.17) 4 ϕ4.5 (ϕ.177) 82.5 (3.248) 82.5 (3.248) 9 (3.54) 4 ϕ4.5 (ϕ.177) Outlet Side Intake Side "Connection Diagrams $$ Connector Type Cable with Connector "Accessories Product Finger Guard Filter Screen FG9D FL9 FS9S $ $ Use M3 screws to install the FL9 filter to the fan frame. $$ When installing a finger guard on both sides, please purchase one additional accessory finger guard. $$ For detailed accessories information see Oriental Motor General Catalog or visit 1

11 MDA Series M8 mm 25 mm Thick (M3.15 in. 1. in. Thick) #With Alarm Operating Voltage Range: ±15% (Applies to each voltage) Materials Frame: Polycarbonate (Flammability grade V-) Blades: Polycarbonate (Flammability grade V-) Overheat Protection: Built-in overheat protection circuit Bearings: Ball bearings " Specifications Function Low-Speed Alarm, Electronic Alarm Type <Alarm Specifications: 3> $ $ Alarm Specifications 3 Page 4 Voltage Current Speed Max. Max. Static Pressure Noise Level Lead Wire Type Connector Type VDC A r/min m 3 /min CFM Pa inh2o db (A) MDA825-12G MDA825-12HG MDA825-24G MDA825-24HG The following items are included in each product. Fan, Finger Guard, Cable with Connector, Mounting Screws (M4 4 mm (1.57 in)), Operating Manual Connector Type only " Static Pressure Characteristics (Characteristics when a finger guard is not installed) Static Pressure [inh2o] Static Pressure [Pa] Speed Static Pressure Speed [r/min] [m 3 /min] [CFM] 1.4 " Dimensions Unit = mm (in.) Mass:.11 kg (.24 lb.) E23 8 (3.15) 71.5±.3 (2.815±.12) (1.) UL Style 17, AWG24 8 (3.15) 71.5±.3 (2.815±.12) 1 (.39) 3 (12) 4 ϕ4.3 (ϕ.169) 11

12 $$ Connector Type Fan Mass:.11 kg (.24 lb.) E122 8 (3.15) 71.5±.3 (2.815±.12) (1.) Cable with Connector (Included) Housing: SMP-3V-NC (J.S.T.) 1 (39.37) ϕ4.8 (ϕ.19) Core Wires AWG22 8 (3.15) UL Style 17, AWG ±.3 (2.815±.12) 5 (2) 4 ϕ4.3 (ϕ.169) Housing: SMR-3V-N (J.S.T.) $$ Finger Guard (Included, common to lead wire type and connector type) Conformed Component for Safety Standards Mass: 24 g (.85 oz.) E (.169) 8 (3.15) 13.2 (4.6) 5 (.2) " Panel Cut-Out Unit = mm (in.) 78 (3.7) 71.5 (2.815) 78 (3.7) 71.5 (2.815) ϕ91 Outlet Side (ϕ3.58) 4 ϕ4.5 (ϕ.177) 71.5 (2.815) 71.5 (2.815) Intake Side 78 (3.7) 4 ϕ4.5 (ϕ.177) "Connection Diagrams $$ Connector Type Cable with Connector "Accessories Product Finger Guard Filter Screen FG8D FL8 FS8S $$ When installing a finger guard on both sides, please purchase one additional accessory finger guard. $$ For detailed accessories information see Oriental Motor General Catalog or visit 12

13 MDA Series M62 mm 25 mm Thick (M2.44 in. 1. in. Thick) #With Alarm Operating Voltage Range: ±15% (Applies to each voltage) Materials Frame: Polycarbonate (Flammability grade V-) Blades: Polycarbonate (Flammability grade V-) Overheat Protection: Built-in overheat protection circuit Bearings: Ball bearings " Specifications Function Low-Speed Alarm, Electronic Alarm Type <Alarm Specifications: 3> $ $ Alarm Specifications 3 Page 4 Voltage Current Speed Max. Max. Static Pressure Noise Level Lead Wire Type Connector Type VDC A r/min m 3 /min CFM Pa inh2o db (A) MDA625-12G MDA625-12HG MDA625-24G MDA625-24HG 24.1 The following items are included in each product. Fan, Finger Guard, Cable with Connector, Mounting Screws (M3 4 mm (1.57 in)), Operating Manual Connector Type only " Static Pressure Characteristics (Characteristics when a finger guard is not installed) Static Pressure [inh2o] Static Pressure [Pa] Speed Static Pressure Speed [r/min] [m 3 /min] [CFM] " Dimensions Unit = mm (in.) Mass:.1 kg (.22 lb.) E24 62 (2.44) 5±.3 (1.969±.12) (1.) 62 (2.44) 5±.3 (1.969±.12) UL Style 17, AWG24 1 (.39) 3 (12) 4 ϕ3.7 (ϕ.146) 13

14 $$ Connector Type Fan Mass:.1 kg (.22 lb.) E (2.44) 5±.3 (1.969±.12) (1.) Cable with Connector (Included) 1 (39.37) ϕ4.8 (ϕ.19) Core Wires AWG22 62 (2.44) 5±.3 (1.969±.12) UL Style 17, AWG24 5 (2) 4 ϕ3.7 (ϕ.146) Housing: SMP-3V-NC (J.S.T.) Housing: SMR-3V-N (J.S.T.) $$ Finger Guard (Included, common to lead wire type and connector type) Conformed Component for Safety Standards Mass: 8.3 g (.29 oz.) E (.169) 72.7 (2.86) 4 (.16) " Panel Cut-Out Unit = mm (in.) 58 (2.28) 5 (1.969) 58 (2.28) 5 (1.969) ϕ65 (ϕ2.56) 4 ϕ3.5 (ϕ.138) 5 (1.969) 5 (1.969) 6.5 (2.38) 4 ϕ3.5 (ϕ.138) 5 (1.97) Outlet Side Intake Side "Connection Diagrams $$ Connector Type Cable with Connector "Accessories Product Finger Guard Filter Screen FG6D FL6 FS6S $$ When installing a finger guard on both sides, please purchase one additional accessory finger guard. $$ For detailed accessories information see Oriental Motor General Catalog or visit Specifications are subject to change without notice. This catalog was published in February, 212. #47 14