Relay and relay 2 for convertible top drive unit

Depending on the series, the convertible top module (CVM) or convertible-top module (CTM) actuates the corresponding relay to open or close the convertible top.
  • Relay for soft top drive
  • Relay 2 for soft top drive

Functional description

The convertible top module (CVM) or convertible-top module (CTM) actuates the convertible top drive unit. The opening or closing of the convertible top is achieved by reversing the direction of motor rotation of the e-motor.

If the command to open or close the convertible top occurs, the convertible top module (CVM) or convertible-top module (CTM) actuates the respective relay for the convertible top drive unit. The relay is applied. This will switch terminal 30b to the corresponding connection on the electric motor.

Item Explanation Item Explanation
1 Convertible top drive unit (e-motor with hydraulic pump) 2 Relay and relay 2 for convertible top drive unit

Structure and inner electrical connection

Both relays are identical in construction. A mechanical relay works according to the principle of the electromagnet. A current flow in the excitation coil creates a magnetic current through the ferromagnetic core. Here, there is a moving anchor mounted on bearings, also ferromagnetic. Force is applied to the anchor at the air gap, causing the contact to switch. The anchor is reset to its initial position by spring force as soon as the coil is no longer excited.

Item Explanation
1 Convertible top drive unit (shown: Actuation of the e-motor for the hydraulic pump)
2 Electric motor
3 Relay 2 for convertible top drive unit (5-pin)
4 Relay for convertible top drive unit (5-pin)

Pin assignments

Pin Explanation
Terminal 30B Terminal 30B, base operation
Kl. 31L Terminal 31L, load earth
U Actuation of the excitation coil by the convertible top module (CVM) or convertible-top module (CTM) in relay 2 for convertible top drive unit
U2 Actuation of the excitation coil by the convertible top module (CVM) or convertible-top module (CTM) in relay for convertible top drive unit

Nominal values

Observe the following setpoint values for the relay (relay for convertible top drive unit and relay 2 for convertible top drive unit):
Variable Value
Voltage supply 9 to 16 V
Temperature range -40 °C to 85 °C

Diagnosis instructions

Failure of the component

In case of failure of relay, (relay for convertible top drive unit or relay 2 for convertible top drive unit) expect the following:

  • Fault memory entry in the convertible top module (CVM) or convertible-top module (CTM)
  • Electrical opening and closing of the convertible top is not possible.

 

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