Lenze Brake Rectifiers

Lenze 3/22/2019
Lenze Brake Rectifiers
An external brake resistor is needed to decelerate larger moments of inertia or in the event of longer operations in generator mode. It converts braking energy into heat.

AC Tech Lenze Rectifiers convert AC voltage supply to DC supply. Output voltages are calculated as follows:

• Bridge rectifier (full wave) Vdc =  Vac/1.1
• Half wave rectifier Vdc = Vac/2.2

Coil Voltage Selection

Supply Volts (AC) Rectifier Type  Coil Voltage (DC)Lenze Brake Rectifiers
110                        Bridge             103
220                         Bridge            180
230/240                  Bridge             205
220                         Half wave        103
230/240                  Half wave        103
317                         Half wave        150
380                         Half wave        180
400/415                  Half wave        180
460                         Half wave        205
Type 99.198.20
Low cost rectifiers designed for compact mounting in terminal boxes. Fixing holes 5.5mm dia, max temperature 100ºC.

• Full Wave                                         • Half Wave
• Max voltage 270V                            • Max voltage 600V
• Max current 1A                                 • Max current 1A
ac switching, or dc with                       for ac switching.
a suppressor. Leads YELLOW           • Leads BLUE

Type 14.630.13/14
Matchbox sized rectifiers with varistor protection. When dc switching, a suppressor  should be used. Dimensions: body 38.6 x 25 x 17.5 deep with provision for M3 screws on base or backface, holes 44mm apart.

• Full Wave                             • Half Wave
• 14.630.13.004                      • 14.630.14.004
• Max voltage 270V                • Max voltage 460V
• Max current 1.0A at 60ºC    • Max current 1.0A at 70ºC

Type 14.630.32/33
Matchbox sized rectifiers with 6 terminals for dc switching and built-in suppression. Dimensions: 52 x 38 x 22 deep, fixing holes 3.3mm 42mm apart.

• Full Wave                   • Half Wave
• 14.630.32.016            • 14.630.33.006
• Max voltage 270V      • Max voltage 460V
• Max current 0.75A      • Max current 0.75A
Lenze Brake RectifiersType B3-18464/B3-17720
Rectifiers rated for ac or dc switching of medium to large inductive brake coils. When dc switching a suppressor should be used. Dimensions: footprint 70 x 31mm, height 38mm, 2 fixing holes 4.1mm x 60mm.

• Full Wave                           • Half Wave
• Max voltage 275V              • Max voltage 575V
• Output 250V dc/2A max    • Output 250V dc/2A max
• Temp range 0-60ºC           • Temp range 0-60ºC

Type B3-90044 Automatic DC Switching
A new design of bridge rectifier with internal dc switching that operates automatically when power is removed, so speeding brake engagement and suiting frequency stop/starting. Suits panel or terminal box mounting, dimensions 49.5 x 31 x 20 deep, fixing holes 3.3mm x 38mm apart.
• Supply 300V AC max
• Output 2A at –20 to +40ºC, 1A at +40 to +70ºC

Type B3-93500 Forced Voltage
A new low cost and compact forced voltage rectifier for terminal box or panel mounting. The unit switches internally from full wave to half wave supply after approx. 0.25s. This allows faster brake release by matching the half wave supply to the coil, alternatively faster brake engagement by matching the full wave supply.
• Panel or terminal box mount, 61 x 50 x 20 deep, fixing holes 3.3mm x 38mm apart.
• Supply 200-500V ac
• Output 1A at –20 to +40ºC, 0.5A at +40 to +70ºC

Type B3-69500 Forced Voltage
A force voltage half wave rectifier suitable for faster energising of larger d.c. brakes. When the a.c. supply is switched on the unit transmits the full waveform for about 0.5 seconds. It then switches internally to transmit half the waveform for holding the brake. Switching the brake coil on the d.c. side of the rectifier is essential for lifts and hoists. Coil selection is the same as for standard half wave rectifiers. CSA and UL approved. When d.c. switching a suppressor should be used.
• Input: 440V a.c. max
• Output: 250V d.c. 3 A max
• Temperature range: 0 to 60°C
• Fixing holes diameter: 4.5mm

Force voltage rectifier connection diagram
Lenze Brake Rectifiers
Lenze Brake Rectifiers