SDC 917 EntryCheck — Stand-Alone Access Control Keypad Installation Guide

Installation instructions for the SDC 917 EntryCheck™ Stand-Alone Keypad — a self-contained access control keypad supporting up to 99 user codes, designed to control electric locking devices such as electric door strikes, magnetic locks, or electrified locksets.

Overview

The SDC 917 EntryCheck is a stand-alone keypad that allows or denies entry to any one of up to 99 individually programmed users without affecting the codes used by the other 98. It supports a choice of two output modes:

• Timed output: Entering an authorized PIN unlocks the door for a programmed time of 1–999 seconds. A momentary dry contact on the Request-to-Exit (EG) input also activates the timed output.
• Latching output: Entering an authorized PIN latches the relay ON or OFF; the lock stays in that state until a PIN is re-entered or the EG input is actuated.

A Request-to-Exit device (exit switch, sense bar, or PIR sensor) with a momentary N/O dry contact can trigger egress without an access code being entered.

Installation & Wiring

• 12–24V AC/DC input: Connect 12 or 24V (AC or DC, 50/60Hz) to power the keypad. In most installations the keypad and electric lock share the same power supply.
• Output 1 (SPDT relay, 3 terminals — COM, N.C., N.O.): Connect the positive lead from the lock's power supply to COM. For a Fail Safe (power-to-lock) device, wire the lock's positive lead to N.C. For a Fail Secure (power-to-unlock) device, wire it to N.O. Connect the lock's negative lead to the power supply's negative output.
• EG (Request-to-Exit): Connect one lead from the egress device to EG, and the other to the negative power supply output feeding the keypad. Requires an N/O momentary contact; multiple devices can be wired in parallel.
• Tamper N.C.: Not used on this model.

Inductive kickback protection: Electric locks generate a strong voltage spike (up to 500V) when power is removed, which can destroy the relay contacts. A diode (included) protects DC-powered electric locks (except magnetic locks); for magnetic locks and all AC-powered locks, use an MOV instead, wired as close as possible to the lock, observing correct diode polarity (silver band).

Common wiring configurations include: a single power supply shared between the keypad and a Fail Secure electric strike; a single power supply shared between the keypad and a Fail Safe magnetic lock with an N/O egress device; and separate power supplies for the keypad versus multiple locks (preferred when controlling more than one lock, to reduce inductive kickback exposure on the keypad). Two-keypad configurations are also supported — one master unit plus one remote egress keypad wired to the master's EG terminal, or two independent keypads each wired in series with the lock's power.

Programming

All programming is protected by a 4-digit Master Code. Programming mode is indicated by the yellow LED lit steady.

Initial Master Code Setup

1. Disconnect power from the keypad.
2. Set the DAP jumper to "ON".
3. Reconnect power. The keypad beeps continuously with the yellow LED flashing continuously.
4. Move the DAP jumper to "OFF" — beeping stops and the yellow LED goes steady.
5. Enter 0 MMMM #, where MMMM is the desired 4-digit Master Code (e.g. 0 1234 # sets the Master Code to 1234).

Programming Commands

User ID numbers range 01–99; User Codes are 4–8 digits. The programming pattern is always: [Master Code] + [function number] + [data, if any] + [#].

Note: These examples use Master Code "1234" for illustration only — do not use an easily-guessed code in practice.

User Operation

The yellow LED flashes to indicate the keypad is ready. Enter a valid User Code followed by # (e.g. 7890#) to release the lock. The green LED lights while the relay is activated.

An invalid code produces 5 beeps and 5 yellow LED flashes. After 10 consecutive invalid entries, the keypad locks out further entries for 30 seconds.

Specifications