Renesas FLASH Development Toolkit 3.07 Instruction Manual download pdf (Page 33)

Designing and Planning an M2150 System

Access Control Design Guide

Considering the Power and Ground Requirements

Introduction

Power can be provided by an power supply mounted in the cabinet, as follows:

• For ENC3, ENC4, CAB3A, CAB4A and CAB5: Two power supplies are available:

− MN-PSU-6A. This can supply a maximum of 6.5A @ 12Vdc. 6A is available to power the board,

readers, etc. A separate output provides up to 500mA for battery recharge. For installations that

require UL294 compliance, the MN-TRANS-150-UL 130VA transformer must be used with this

power supply (110Vac to 19Vac).

For non-UL installations, this power supply (if used) can be powered by 24Vdc, or by 19/20Vac

from an appropriate 150VA transformer (such as the MN-TRANS-150 or MN-TRANS-150-230).

− MN-PSU-KIT (7000-5283)(not for CAB5). This can supply a maximum of 3.0A @ 12Vdc. For

installations that require UL294 compliance, the MN-TRANS-75-UL 75VA transformer must be

used with this power supply (110Vac to 18Vac).

For non-UL installations, this power supply (if used) can be powered by 24Vdc, or by 18Vac

from an appropriate 75VA transformer (such as the MN-TRANS-75-230).

For installations that require UL294 compliance, the transformer must be mounted external to the

cabinet.

• For the RAK3 cabinet (not for UL installations): Built-in power supply; 100/240Vac input, 12Vdc

output. This provides a maximum of 3.5A @12Vdc.

• For the ENC-1L cabinet (not for UL installations): MN-PSU-2+2; 32Vac input, with 12Vdc and

24Vdc outputs. The 24Vdc output provides up to 2A for door releases. The 12Vdc output provides a

maximum of 2A. A separate output provides up to 500mA to recharge a 24Vdc battery (two 12Vdc

batteries in series).

• For ENC-1 and elevator node (not for UL installations): MN-PSU-KIT (7000-5283); 18Vac-to-12Vdc

power supply. This can supply a maximum of 3.0A @ 12Vdc. 2.5A is available to power the board,

readers, etc. 500mA is available for battery recharge. The power supply (if used) can be powered by

24Vdc, or by 18Vac from an appropriate 75VA transformer (such as the MN-TRANS-75-230).

All cabinets MUST be grounded. Make sure that the grounding points have been identified before

installation.

Checking the Current Available for External Devices

In most cases, power for readers, ENVS, door releases and auxiliary outputs can be sourced from the

power supply provided. Table 2-3 shows the minimum current that is available to power such devices.

These are worst-case figures calculated as described on page 28. They include a battery recharge current

of 500mA for the battery (not available for RAK3), and assume that the power supply is powering only one

of the boards listed.

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Renesas FLASH Development Toolkit 3.07 Instruction Manual Page 33