ELK P212S Specsheet

Supervised Remote Power Supply, 12VDC

ELK-P212S

APPLICATION

The ELK-P212S is a Supervised Remote Power Supply / Battery Charger, providing 12 VDC output with up to 2 Amps
of total current. It supervises the AC Power Input as well as the rechargeable Battery, and can report abnormal
conditions back to an ELKM1 Control over the RS485 four (4) wire data bus. It also features relay outputs for AC and
Low Battery to allow "stand-alone" operation with other Controls (Security, Access, CCTV products, etc.). Power from
the P212S can be used to increase the capacity of a control, or to remotely power devices such as motion detectors,
keypads, zone expanders, sirens, annunciators, etc. Surveys have shown that large installations can benefit from
remote (decentralized) placement of zone expanders and other devices into strategic wiring closets and enclosures,
with each location having its own local supervised power supply. The benefits include ease of maintenance and
service, reduction in the amount of wire homeruns, and reduced labor costs.

The P212S monitors the AC Power Input and periodically loads tests the Battery. There are two (2) sets of 12 VDC
power outputs with a combined rating of 2 Amps. The outputs are protected against overcurrent by PTC self-restoring
circuit protectors. A convenient On/Off switch provides the ability to quickly and easily disconnect both the AC and
DC for maintenance. The P212S also includes automatic low battery disconnect circuitry to protect against battery
deep discharge during an extended power outage.

FEATURES

Regulated 12VDC Output with up to 2 Amps of current

•

Energy Efficient ESMT - Elk Switch Mode Technology

•

ensures low idle power with maximum output headroom
Automatic output over-current protection (PTC)

•

Master AC and Battery ON / OFF Power Switch

•

Visual AC Power Indicator

•

Innovative EBT - Elk Battery Technology circuit provides

•

maximum battery life

- Controlled charge ramp and maintenance algorithm

- Low Battery cut-off protects battery from deep discharge
M1 Control allows

•

- Remote power reset of powered peripherals

- Data-bus supervision of AC and Battery status
Stand-alone flexibility

•

- Two (2) sets of DC outputs

- One (1) on-board relay to supervise battery status

- One (1) on-board relay to supervise AC status

SPECIFICATIONS

AC Input: 16.5VAC, 45VA (ELK-TRG1640 or equiv.)

•

DC Output Voltage: 13.8 Volts D.C. +/- 5%

•

Current Rating: 2.0 Amps

•

Wattage: 30 Watts

•

DC Output Protection: Auto Resetting PTC

•

Rechargeable Battery Size: Max. 12 Ah

•

Low Battery Cutoff Threshold: ~10 Volts.

•

Load Regulation: + / - 2%

•

Features and Specifications subject to change without notice.

P.O. Box 100 • Hildebran, NC 28637 USA • 828-397-4200 • 828-397-4415 FAX
http://www.elkproducts.com • email: [e-mail]

07/01/13

Ordering Part Numbers & Optional Accessories:

ELK-P212S Switching Power Supply Board, 12VDC 2.0A
ELK-TRG1640 Transformer, 16.5VAC 40VA w/PTC Protection
ELK-1280 Battery, 12VDC 8Ah
ELK-W018B 4 Conductor Ribbon Cable for local connection

ELK-UB12 Metal Enclosure, 12" x 12" x 3.25"
ELK-SWP3 Mounting Plate for Structured Wiring Enclosures

of input/output expander modules

ELK-P212S Installation

1. Turn Master Power Switch (SW1) to Off.

2. The P212S board can be mounted using Double Sided Tape (provided), or using an optional Elk-SWP3 Mounting Plate &

accompanying nylon standoffs. The SWP3 Plate makes it easy to snap the P212S into a structured wiring enclosure such as
the ELK-SWB14, SWB28, ELK-UB12, and many other manufacturer brands.

3. Connect a 16.5V, 45VA Transformer to the AC terminals. Use 18 ga. (min.) wire. DO NOT plug Transformer into Switched
Outlet.

4. Devices being powered from the P212S can be connected to one of the two sets of DC Output Terminals. These outputs are
overload protected by a single self-restoring PTC.

5. Connect a rechargeable lead-acid Battery (maximum 12 Ah) to the red and black battery wires. Observe polarity.

Stand-Alone Application (Factory Default Setting)

The P212S in stand-alone mode is compatible with virtually any Control or annunciator. It provides two (2) form "C" relay outputs for
AC and Battery supervisory notification. If AC and Battery are normal (good) the relays will be energized (active) and the Com and
N/O contacts will be CLOSED. Upon detection of an AC failure or Low Battery condition the respective relay will change state (de­energize) and the Com & N/O contacts will OPEN. At this time the Com and N/C terminals will become CLOSED. The advantage of
having form "C" relays is being able to obtain an Open or a Close upon trouble. This capability allows the P212S to be compatible
with any alarm panel or notification device. Refer to the hookup diagrams.

AC Time Delay:

The AC Trouble Output detection circuitry has a built-in time delay after loss of AC. This delay helps avoid nuisance troubles caused
by brief power outages. The Jumper marked "JP2 selects the amount of delay time (5 or 15 minutes).

NOTE: The low battery shutoff
circuitry intentionally prevents the
P212S to be powered-up on Battery
only (No AC Power).

However, for testing purposes when
no AC power is available (i.e.
constructions sites), then it is possible
to power up on Battery ONLY by
simply momentarily shorting the two
circuit pads marked "START" with the
tip of a screwdriver. Thi s should
ONLY be used for testing when AC
power is not yet available.!

ELK-P212S
+12VDC SUPERVISED
2 AMP POWER SUPPLY

ON

ON

SW1

OFF

OFF

POWER ON/OFF

12 Volt Battery

e.g. ELK-1280

JP2 - Selects AC Fail Delay in Stand Alone applications:

For 5 minutes place shorting jumper on the left two pins.

For 15 minutes place shorting jumper on the right two pins.

+

BATTERY

12V

-

16.5VAC

AC XFMR

12 Volt

POS NEG

12VDC

POS NEG

12 Volt

AC TROUBLE
N/C COM N/O

JP2 AC FAIL

DELAY

Connections and jumpers

5 Min

15 Min

ELK PRODUCTS

HILDEBRAN,

28637

OUTPUT B
N/C COM N/O

TERM

RES

JP1

J2

ON

1 2 3 4

ELK BUS ADDRESS
TYPE 1 DEVICE

in this dotted area are not

used in Stand-Alone

These are used when

P212S is connected to the

SPARE A B NEG M

DATA

M1 4-wire Data Bus.

+V A B NEG

SW2

See next page.

mode.

Status LED

Blink 50/50 rate = Stand-alone (non M1) mode

AC Trouble and Output B (Low Battery) Connections

16.5V 45VA

Transformer

ELK-TRG1640

Combined current draw of the

Power Outputs, including

12VDC

connector J2 should NOT

exceed 2 Amps

AC TROUBLE RELAY

Energized with continuity between terminals COM and N/O when AC power is present. Connect to these terminals if the Control or Annunciator requires a OPEN
condition to indica te AC failure. Connect to terminals N/C and COM if the Control or Annunciator requires a SHORT condit ion to indicate AC failure.
NOTE: Upon an AC failure t here is a time delay (selectabl e for 5 or 15 minutes) bef ore the relay changes state.

OUTPUT B Relay [Stand-Alone Mode]

Energized with continuity between terminals COM and N/O when the rechargeable battery tests OK. Connect to these terminals if the Control or Annunci ator requires a
OPEN condition to indicate Low Battery. Connect to terminals N/C and COM if t he Control or Annunciat or requires a SHORT condition to indicate Low Battery.
NOTE: A Battery test is performed 1.5 minutes after power-up and every 15 minutes thereafter.

Page 2

Elk-M1 Data Bus Application

The P212S was primarily designed as a Remote Supervised Power Supply for the M1 Control. It connects to the Four (4) Wire
"RS485" Data Bus and enrolls as a "Type 1" Keypad device with a Bus Address ID. The reason the P212s is enrolled as a Keypad
is so that it can have a Zone Input and a Programmable Output, just like an M1 Keypad. The Zone is exclusively used for transmitting
AC and Battery supervisory information back to the M1, however the Output is programmable for most any application. The identifica­tion of the Zone and Output can be determined by the Bus Address of the P212S. See Table 2. Each enrolled P212S does take the
place of a regular M1 Keypad, thereby reducing the total number of keypads from the maximum of 16.

1. Install a short wire jumper as per diagram below to setup the P212S for M1 Data Bus mode operation. Jumper connects the

IMPORTANT EXTRA STEPS

top right (unmarked) terminal to the "NEG" data bus terminal. Connect the M1 data bus coming from the M1 Control.

2. Program the Zone Definition of the Zone ID associated with the P212S as a Def - "Power Supervisory Zone".

Status LED

3 rapid blinks& Off = P212S N ot Enrolled to M1

Data Bus Termination: Put shorting jumper on JP1 according

to the B us T erm ination p olicy. See M 1 Instr uction s.

ELK-P212S
+12VDC SUPERVISED
2 AMP POWER SUPPLY

ON

ON

SW1

OFF

OFF

POWER ON/OFF

12 Volt Battery

e.g. ELK-1280

16.5V 45VA

Transformer

ELK-TRG1640

+

BATTERY

12V

-

16.5VAC

AC XFMR

12 Volt

POS NEG

12VDC

Motion Det.,

Glassbreaks,

et.

12 Volt

POS NEG

12VDC

Motion Det.,

Glassbreaks,

et.

AC TROUBLE
N/C COM N/O

Solid ON = No C omm unications w ith M1
1 quick blink & Off = Normal Operation GOOD
Blink 50/50 rate = Stand-alone (non M1) mode

JP2 AC FAIL

DELA Y

5 Min

15 Min

TERM

RES

JP1

ELK PRODUCTS

HILDEBRAN,

28637

OUTPUT B
N/C COM N/O

J2

+V A B NEG

ON

SW2

1 2 3 4

ELK BUS ADDRESS
TYPE 1 DEVICE

Data Bus Devices, expanders, etc. can be mounted locally with the P212S

and interconnected using ELKW018B ribbon cables or standard wires.

ElkW018B
24" Ribbon

Cable

12 V POS & NEG OUTPUTS

Combined current draw of the Power Outputs,
and connector J2 should NOT exceed 2 Amps.

AC TROUBLE RELAY

Works the same as stand-alone mode.

OUTPUT B Relay

In the M1 Data Bus application this output is a
programmable output for use by the M1 Rules
Programming.

Next

Device

Zone Expander

RED + 12V RED + 12V

NOTE: These devices are being powered from the P212S, not from the M1 Data Bus.
Connector J2 provides +12V from the P212S when the optional ElkW018B cable is used.

Install wire Jum per here to sele ct

IMPORT ANT !

M1 Data Bus Mode operation

Black - Data Bus

W hite - Data Bu s

Green - Data Bus

SPARE A B NEG M

DATA

Red - Data Bu s **

** This terminal does NOT co nnect to the P212S circuit. It is
ONLY a place to park or terminate the RED Pos (+) data bus wire
or as a splice point when the bus is going on to another location.

J2 - For use with ElkW 018B cable to connect
local bus devices. These 4 pins supply Neg, A,
B, and +12 from the P212S.

Bus Address Switches

See Table 1

ElkW018B

24" Ribbon

Cable

Zone Expander

FROM M1 CONTROL

4-wire D ata Bus

ElkW018B
24" Ribbon

Cable

OR

Black

White

Green

* * Red Data Bus Wire - Positive (+): This wire is not actually needed as the P212S is a power supply. An isolated screw
terminal marked "Spare" is provided for parking (terminating) this wire or for splicing with another cable if the bus is continuing
on. The important point is that the P212S ONLY NEEDS THREE (3) connections to the M1 Data Bus, Negative (-), Data A, and
Data B.

CAUTION: DO NOT connect the Positive (+) wires of

multiple power supplies together! It is OK to connect all Negative (-)

wires together, as this will assure the entire system has a common reference to Negative.

12 V POS and NEG Outputs: These two (2) terminals may be used for powering motion sensors, zone expanders, etc., or to extend

"boost" power on the data bus outgoing from the P212S. DO NOT connect the incoming data bus Positive (+) RED wire as this
would result in unsafe backfeeding of power to previous devices/sources. See caution above. We recommend terminating or
"parking" the Positive (+) RED wire of the incoming data bus to the terminal marked "Spare". Data bus devices prior to the P212S
will be powered by the previous power supply, and devices after the P212S will be powered by the P212S. In the case of multiple
P212S Supplies, this procedure can be repeated up to the maximum distance (4,000 feet) of the M1 data bus.

NOTE: Connector "J2" provides Positive (+) 12VDC from the P212S and is ideal for locally connecting zone expanders, etc.
using an optional ELKW018B cable. Devices must be mounted in close proximity (within 24") of the P212S.

Page 3

SETTING THE DATA BUS ADDRESS: Prior to installation and enrollment on the M1 Data Bus the P212S must be set to a data

5

5

5

5

5

5

5

5

5

5

5

5

5

5

5

5

5

5

5

5

5

5

bus address from 1 to 16. Refer to the 4 gang Address Switch. Starting on the left side, each tiny switch represents a binary value.
(1, 2, 4, 8). Add up the binary value of each switch in the ON (UP) position to obtain the address setting. Example: If switch 1 & 3 are
ON (UP) the result is address 5 (1 + 4). All switches OFF (DN) is address 16. Each address setting must be unique, DO NOT
DUPLICATE an address that already belongs to any existing enrolled Keypads.

Table 1: Data Bus Address Switch Settings

Address 1

ON

Address 2

ON

Address 3

ON

Address 4

ON

Address 5

ON

Address 6

ON

Address 7

ON

Address 8

ON

LEGEND

1 2 3 4

Address 09

ON

1 2 3 4

1 2 3 4

Address 10

ON

1 2 3 4

1 2 3 4

Address 11

ON

1 2 3 4

1 2 3 4

Address 12

ON

1 2 3 4

1 2 3 4

Address 13

ON

1 2 3 4

1 2 3 4

Address 14

ON

1 2 3 4

ENROLLING THE P212S ONTO THE DATA BUS: VERY IMPORTANT!

1. From an enrolled M1 Keypad press the ELK key, then press 9 (or scroll up) to display

9 - Installation Programming. Press the RIGHT arrow key to select this menu.
The Installer Program Code (PIN) must be entered to access this menu.

2. Enter the Installer Program Code. (See M1 Manual for the default Code)

3. The first Installer Programming menu displayed will be "Bus Module Enrollment"

4. Press the RIGHT arrow key to select this menu. "Enrolling Bus Modules" will display

1 2 3 4

Address 15

ON

1 2 3 4

1 2 3 4

Address 16

ON

1 2 3 4

Keypad Display

23456789012345678901234

23456789012345678901234

23456789012345678901234

Auth. Required

23456789012345678901234

23456789012345678901234

23456789012345678901234

Enter Valid Pin

23456789012345678901234

23456789012345678901234

23456789012345678901234

23456789012345678901234

01-Bus Module

23456789012345678901234

23456789012345678901234

23456789012345678901234

23456789012345678901234

Enrollment

23456789012345678901234

23456789012345678901234

23456789012345678901234

23456789012345678901234

XX Bus Modules

23456789012345678901234

23456789012345678901234

23456789012345678901234

23456789012345678901234

Enrolled, Editr

ON

OFF

5. The M1 sends an enrollment message to all data bus devices, followed by a display of the total enrolled

Bus Modules. To view the enrolled devices and/or remove a device press the RIGHT arrow key for "Edit".

6. Press the * or Exit keys to exit Installer Programming.

PROGRAMMING THE APPROPRIATE M1 ZONE FOR AC AND BATTERY SUPERVISION: VERY IMPORTANT!

Once the P212S is enrolled on the M1 Data Bus it will appear as a Type 1 (Keypad) device with its own unique Bus Address. The
Bus Address determines the Zone ID and Output ID assigned to that P212S. Example: Type 1, Address 1 belongs with Zone 193 /
Output 193. Type 1, Address 2 belongs with Zone 194 / Output 194. The last address (16) belongs with Zone 208 / Output 208.

Table 2: Zone & Output Assignments Based on Data Bus Address of "Type 1" Devices

Address 1

ZONE 193
OUTPUT 193

Address 09

ZONE 201
OUTPUT 201

Address 2

ZONE 194
OUTPUT 194

Address 10

ZONE 202
OUTPUT 202

Address 3

ZONE 195
OUTPUT 195

Address 11

ZONE 203
OUTPUT 203

Address 4

ZONE 196
OUTPUT 196

Address 12

ZONE 204
OUTPUT 204

Address 5

ZONE 197
OUTPUT 197

Address 13

ZONE 205
OUTPUT 205

Address 6

ZONE 198
OUTPUT 198

Address 14

ZONE 206
OUTPUT 206

Address 7

ZONE 199
OUTPUT 199

Address 15

ZONE 207
OUTPUT 207

Address 8

ZONE 200
OUTPUT 200

Address 16

ZONE 208
OUTPUT 208

1. Refer to the information above to determine which Zone ID belongs with the bus address of the P212S just installed.

2. Use Keypad Installer Programming to set the appropriate Zone Definition to Definition " 32 = Power Supervisory Zone" and make

sure the Type is set to "0 = EOL Supervised/RF".

NOTE: ElkRP Programming software can be used to program the Zone Definition, but ElkRP will not even display zones 193 ­208 until a Hardwired Exp. (Exp. 13) group of zones has been setup or added to the display. From the ElkRP software highlight
(click) Zones (Inputs), then right click and select New Hardwired Zones... A box will now appear titled New Hardwired Zones.
Click on the radio button (lower right side) labeled Zones 193-208 (Group 13). Then click OK. This will add a display for
Hardwired - Exp 13 under the Zones (Inputs). It will now be possible to program the appropriate zone assigned to the P212S.

3. Additional programming such as the Zone Name, Dialer Reporting Codes, etc. is optional and varies by Installation.

PROGRAMMING THE M1 FOR AC FAIL OR LOW BATTERY DIALER REPORTS

To enable Central Station reporting of AC Fail and Low Battery coming from the P212S the Zone Report Code for the respective zone
MUST be set to a value of one (1). To enable Central Station reporting in cases where the P212S Power Supply is removed, turned
off, or the bus wiring becomes severed, it will be necessary to program the "System Report Codes", "SR07 Exp Module Tbl" to a
value of one (1).

Page 4

OPERATION

No Trouble Conditions (AC Power and Battery OK)

When both AC and Battery conditions are OK, the Zone ID assigned to the Bus Address of the P212S will be in a normal
(secure) state. For diagnostic purposes this can be confirmed from "Keypad Menu 86, System Diagnostics". Select option 3,
"Display Zone Voltage" and enter the 3 digit Zone ID. The display should be "Volt = 06.8" or very close to that value.

AC Power Failure:

AC Power is considered OK when supplied by a 16.5 VAC Transformer and the master On/Off switch is ON. The local AC
Trouble Relay on the P212S will be energized (active ON) when AC Power is OK.

Upon failure of AC Power, the P212S immediately transmits the event to the M1 Control by creating an electrical SHORT
condition on the assigned Zone. For diagnostic purposes this can be confirmed using the System Diagnostics (Keypad Menu

86). Select option 3, "Display Zone Voltage" and then enter the 3 digit zone ID. The display should be "Volt = 00.0".

AC Failure Delay Time - Although the P212S immediately notifies the M1 upon AC failure, the M1 uses it's AC Fail Delay timer to
determine when to display and/or report the AC failure. This time value is programmed under Installer "Menu 12 - Sys Rpt Code
Options & Codes", option "SR01 AC Fail Rpt Delay". The programmable time is 000 to 255 minutes. (000-no delay) Upon
expiration of the time delay all connected M1 Keypads should display "AC Failure", and the M1 event log will show "RemACFail".
The Zone ID and Area (Partition) ID will also display on that same event. Refer to the M1 Installation & Programming Manual.

NOTE: Locally the P212S AC Trouble Relay will continue to follow the time delay settings according to Jumper JP2.

Low Battery:

The Battery is considered OK only if it passes the prescribed load test performed by the P212S. See "Battery Autotest Timing".

Upon detection of Low Battery, the P212S immediately transmits the event to the M1 Control by creating an electrical OPEN
condition on the assigned Zone. For diagnostic purposes this can be confirmed using the System Diagnostics (Keypad Menu

86). Select option 3, "Display Zone Voltage" and then enter the 3 digit zone ID. The display should be "Volt = 12.x".

All connected M1 Keypads should display "Low Battery" and the M1 event log will show "RemLoBattt". The Zone ID and Area
(Partition) ID will also display on that same event. Refer to the M1 Installation & Programming Manual.

Output "B" Functionality:

The local "Output B" relay is free to be used as a programmable output when the P212S is used in M1 mode. In other words, in
the M1 mode this relay does not represent or follow the Low Battery or Battery condition. It can be used by the M1 Rules
Programming for various applications. Some examples of its use are:

- For tripping or activating a local door strike

- For resetting (breaking) power to a latching detector. This can easily be done by series wiring either the POS or NEG power
lead powering the detector through the contacts of Output B.
NOTE: Remember that the identity of the assigned output is based on the Bus Address assigned to the P212S.

BATTERY AUTOTEST TIMING

An initial test of the battery is performed 1.5 minutes after initial power up. After that the load test occurs every 4 hours. When
connected to the M1 Bus the P212S syncronizes its test with the M1 main battery test time, offset in minutes equal to the Bus
Address value. This helps to stagger the battery tests. When AC Power is OFF the battery testing occurs once a minute.

Page 5