Input Monitor Expansion Module (ADC-AC-MR16IN) - Installation Guide
Notice: Installation and maintenance servicing for this device should only be performed by qualified personnel.
Note: This article specifically covers the installation of the Input Monitor Expansion Module (ADC-AC-MR16IN). For instructions on how to set up a broader access system, see Smarter Access Control - Quick Start Guide.
The ADC-AC-MR16IN expansion module provides a solution for controlling 16 additional inputs. Two Form-C relay outputs may be used to control locking hardware or other devices. Two dedicated inputs are provided for cabinet tamper and UPS fault monitoring. Input circuits can be configured as unsupervised or supervised using end-of-line resistors. Communication to the Mercury Series Door Controller is accomplished using a 2-wire RS-485 interface. The ADC-AC-MR16IN requires 12-24 VDC for power. See the following figure for component location.
Requirements
- A Smarter Access Control Plus service package
Wiring
Connections
| TB1-1 | Input 1 | I1 | Input 1 |
|---|---|---|---|
| TB1-2 | Input 1 | I1 | Input 1 |
| TB1-3 | Input 2 | I2 | Input 2 |
| TB1-4 | Input 2 | I2 | Input 2 |
| TB2-1 | Input 3 | I3 | Input 3 |
| TB2-2 | Input 3 | I3 | Input 3 |
| TB2-3 | Input 4 | I4 | Input 4 |
| TB2-4 | Input 4 | I4 | Input 4 |
| TB3-1 | Input 5 | I5 | Input 5 |
| TB3-2 | Input 5 | I5 | Input 5 |
| TB3-3 | Input 6 | I6 | Input 6 |
| TB3-4 | Input 6 | I6 | Input 6 |
| TB4-1 | Input 7 | I7 | Input 7 |
| TB4-2 | Input 7 | I7 | Input 7 |
| TB4-3 | Input 8 | I8 | Input 8 |
| TB4-4 | Input 8 | I8 | Input 8 |
| TB5-1 | Input 9 | I9 | Input 9 |
| TB5-2 | Input 9 | I9 | Input 9 |
| TB5-3 | Input 10 | I10 | Input 10 |
| TB5-4 | Input 10 | I10 | Input 10 |
| TB6-1 | Input 11 | I11 | Input 11 |
| TB6-2 | Input 11 | I11 | Input 11 |
| TB6-3 | Input 12 | I12 | Input 12 |
| TB6-4 | Input 12 | I12 | Input 12 |
| TB7-1 | Input 13 | I13 | Input 13 |
| TB7-2 | Input 13 | I13 | Input 13 |
| TB7-3 | Input 14 | I14 | Input 14 |
| TB7-4 | Input 14 | I14 | Input 14 |
| TB8-1 | Input 15 | I15 | Input 15 |
| TB8-2 | Input 15 | I15 | Input 15 |
| TB8-3 | Input 16 | I16 | Input 16 |
| TB8-4 | Input 16 | I16 | Input 16 |
| TB9-1 | Cabinet Tamper | CT | Cabinet Tamper |
| TB9-2 | Cabinet Tamper | GND | Cabinet Tamper |
| TB9-3 | Power Fault | BA | Power Fault |
| TB9-4 | Power Fault | GND | Power Fault |
| TB10-1 | 2-Wire RS485 Bus | TR+ |
SIO Port |
| TB10-2 | 2-Wire RS485 Bus | TR- | SIO Port |
| TB10-3 | Not Used | ||
| TB10-4 | Not Used | ||
| TB10-5 | Ground | GND | Ground |
| TB11-1 | Input/Output Power | VIN | Input Power 12-24 VDC |
| TB11-2 | Input/Output Power | VOUT | Output Power |
| TB11-3 | Input/Output Power | GND | Ground |
| TB12-1 | Relay 1 | NC | Relay 1 Normally Closed Contact |
| TB12-2 | Relay 1 | C | Relay 1 Common Contact |
| TB12-3 | Relay 1 | NO | Relay 1 Normally Open Contact |
| TB12-4 | Relay 2 | NC | Relay 2 Normally Closed Contact |
| TB12-5 | Relay 2 | C | Relay 2 Common Contact |
| TB12-6 | Relay 2 | NO | Relay 2 Normally Open Contact |
Status LEDs
Power-up:All LEDs OFF. |
Initialization:Once power is applied, initialization of the module begins. When initialization is completed, LEDs 1 through 16, CT, BA, A, and B are briefly sequenced ON then OFF. The D1 LED is turned ON at the beginning of initialization. |
Run time:After successful initialization, the LEDs have the following meanings:
The ADC-AC-MR16IN accepts 12 to 24 VDC for power on TB7. Locate the power source as close to the ADC-AC-MR16IN as possible. Make power connection with minimum of 18 AWG wires. |
|
Communication Wiring
The ADC-AC-MR16IN communicates to an Alarm.com Mercury Series Door Controller using a 2-wire RS-485 interface. The ADC-AC-MR16IN allows for multi-drop communication on a bus of up to 4,000 feet (1219 m). Use twisted pair (minimum 24 AWG) with drain wire and shield for communication. If the ADC-AC-MR16IN is the last device on the communication bus, jumper J3 must be installed.
RS-485 Wiring using the ADC-AC-LP1501 Door Controller
Note: For ease of install, daisy chain expansion modules together. Wire each expansion module to the next module instead of wiring directly back to the controller.
Line Termination
For ADC-AC-MR16IN modules at the end of the communication line, install jumper J3.
Note: The EOL jumper should be installed at both ends of the communication line. This typically includes the controller and last expansion module
Relay Wiring
Two Form-C contact relays are provided for controlling door lock mechanisms or other devices. Each relay has a Common pole (C), a Normally Open pole (NO), and a Normally Closed pole (NC). When momentarily delivering power to unlock the locking hardware (fail secure), the Normally Open and Common poles are used. When momentarily removing power to unlock the locking hardware (fail safe), the Normally Closed and Common poles are used. Check with local building codes for proper egress door installation. 18 AWG minimum recommended for electric locking hardware.
The current ratings for relay OUT 1 and OUT 2 are 5 A @ 30 VDC for normally open (NO) contact and 3 A @ 30 VDC for normally closed (NC) contact.Load switching can cause abnormal contact wear and premature contact failure. Switching of inductive loads (strike) also causes EMI (electromagnetic interference), which may interfere with normal operation of other equipment. To minimize premature contact failure and to increase system reliability, a contact protection circuit may be used.
The following circuit is recommended. Locate the protection circuit as close to the load as possible (within 12 inches [30 cm]), as the effectiveness of the circuit will decrease if it is located far away.
Typical DC Door Strike Wiring
Diode Selection
- Diode current rating: 1x strike current
- Diode breakdown voltage: 4x strike voltage
- For 12 VDC or 24 VDC strike, diode 1N4002 (100 V/1 A) typical
Input Wiring
There are 16 inputs that are typically used to monitor door position or request to exit devices. Input circuits can be configured as Unsupervised (2 states); reporting as open or closed contact, or Supervised (6 states); reporting as open or closed contact, open circuit, shorted circuit, grounded circuit, or foreign voltage.
Note: Grounded and foreign voltage states are not a requirement of UL 294 and therefore not verified by UL.
A supervised input circuit requires adding two resistors with value of 1k ohm, 1% to the circuit to facilitate proper reporting and should be located as close to the sensor as possible.
The input circuit wiring configurations shown are supported but may not be typical. 22 AWG minimum required for input wiring. 18 AWG recommended if wiring request to exit devices in series with locking hardware.
Specifications
Important: The Interface is for use in low voltage, class 2 circuits only. The installation of this device must comply with all local fire and electrical codes.
| Input Power | 12 to 24 VDC ± 10%, 350 mA max |
|---|---|
| Communication | 2-Wire RS-485 |
| Inputs |
16 unsupervised/supervised programmable inputs, standard EOL: 1k/1kΩ, 1%, ¼ watt One dedicated input for each of the following:
|
| Outputs | 2 Form-C relay outputs: Normally Open (NO): 5 A @ 30 VDC resistive, Normally closed (NC): 3 A @ 30 VDC resistive |
| Certifications | UL294 Recognized, FCC Part 15 Class A, CE Compliant, RoHS (2011/65/EU & 2015/863), EU REACH (1907/2006), California Proposition 65, NIST Certified Encryption |
| Dimensions (L x W x H) | 8 x 6 x 1" (20.3 x 15.2 x 2.5 cm) |
| Temperature |
-40°F – 167°F (0°C – 70°C) operational -67°F – 185°F (-55°C – 85°C) storage |
| Operating Humidity | 5-95% (non-condensing) RH |
Warranty
Mercury Security warrants the product is free from defects in material and workmanship under normal use and service with proper maintenance for one year from the date of factory shipment. Mercury Security assumes no responsibility for products damaged by improper handling or installation. This warranty is limited to the repair or replacement of the defective unit.
There are no expressed warranties other than set forth herein. Mercury Security does not make, nor intends, nor does it authorize any agent or representative to make any other warranties, or implied warranties, and expressly excludes and disclaims all implied warranties of merchantability or fitness for a particular purpose.
Returns must be accompanied by a Return Material Authorization (RMA) number obtained from customer service, and prepaid postage and insurance.
Liability
The Interface should only be used to control exits from areas where an alternative method for exit is available. This product is not intended for, nor is rated for operation in life-critical control applications. Mercury Security is not liable under any circumstances for loss or damage caused by or partially caused by the misapplication or malfunction of the product. Mercury Security's liability does not extend beyond the purchase price of the product.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.